Medical records and preoperative documentation required

Provide medical records demonstrating: indication that the requested procedure is initial, planned two‑stage, revision, or removal; completion of a preoperative evaluation including detailed weight history and dietary and physical activity patterns; psychosocial‑behavioral evaluation or participation in a multidisciplinary surgical preparatory regimen (including nutrition consult); current and two‑year BMI history; documentation of treatments tried, failed, or contraindicated with dates/duration/reason; results of recent relevant diagnostic testing; physician's treatment plan; and for adolescents (12–17 years) include obesity class. For subsequent bariatric surgery also include date of initial surgery, details of complications (if any), and the complete staged surgical plan.

• Indicate whether request is for initial, planned two‑stage procedure, revision, or removal.
• Preoperative evaluation: detailed weight history, dietary and physical activity patterns.
• Psychosocial‑behavioral evaluation or participation in a multidisciplinary surgical preparatory regimen (including nutrition consult).
• Current and two‑year BMI history.
• Documentation of treatments tried, failed, or contraindicated (include dates, duration, reason).
• Results of recent relevant diagnostic testing.
• Physician's treatment plan.
• For adolescents 12–17: include obesity class.
• For subsequent bariatric surgery: date of initial surgery, details of complications, and complete staged surgical plan.

Reference CPT/unlisted codes on authorization requests

When requesting authorization, reference the applicable CPT and unlisted procedure codes listed in the policy (e.g., 0813T, 43290, 43291, 43644, 43645, 43647–43659, 43770–43775, 43843–43848, 43860, 43881–43889, 64590, 64595, 64999). Inclusion of a code is for reference only and does not by itself authorize coverage; indicate procedure type requested (initial, two‑stage, revision, removal).

• List the applicable CPT/unlisted codes from the policy when submitting an authorization request.
• Indicate procedure type: initial, planned two‑stage, revision, or removal.
• Note: code listing is reference only and does not guarantee coverage.

Document multidisciplinary assessment and clear indication for revisional surgery

Prior authorization for revisional bariatric surgery must include documentation of a multidisciplinary assessment and clear indication for revision (distinguish anatomical/technical failure from behavioral causes), plus prior measures attempted (diet/lifestyle/pharmacologic) and the rationale for the chosen revisional procedure.

• Provide multidisciplinary assessment findings and risk‑benefit consideration prior to revision.
• Document whether inadequate weight loss/weight regain is due to anatomical causes versus behavioral nonadherence.
• List prior conservative measures and prior bariatric procedures with dates and complications.

Prior authorization documentation required for revisional bariatric surgery

Prior authorization is required for revisional bariatric procedures and should include the indication for revision, prior weight‑loss trajectory, documentation of failure or complications of the primary surgery, prior procedure type and dates, and the rationale that establishes medical necessity for the revisional operation.

• Include indication, prior weight‑loss trajectory, and documented failure or complications.
• Provide prior procedure type, date(s), and operative details.
• Explain rationale for selected revisional technique to demonstrate medical necessity.

Acknowledge higher revision risk and provide supporting evidence for revisional requests

Revisional procedures are commonly required after failed primary operations (notably after LAGB); prior authorization should acknowledge that revisional surgery is associated with variable outcomes and higher complication/reoperation rates and include evidence supporting the need for revision.

• State prior index procedure type (e.g., LAGB) and why revision is needed.
• Provide evidence of prior management and justification given higher complication and reoperation rates in revisional cases.
• Include multidisciplinary review documenting individualized risk assessment.

Prior authorization scrutiny expected for OAGB/MGB

Expect prior authorization scrutiny for one‑anastomosis/mini‑gastric bypass (OAGB/MGB); authorization should document indication, prior bariatric history, BMI/comorbidity status, and informed‑consent discussion addressing evolving evidence and higher reported rates of de novo GERD and marginal ulcers in some analyses.

• Document indication and prior bariatric history.
• Provide BMI and comorbidity status per guideline thresholds.
• Include informed‑consent discussion of uncertain long‑term outcomes and specific risks (e.g., de novo GERD, marginal ulcers).

Require PA for single‑anastomosis/hypoabsorptive procedures (SADI‑S/SADS)

Prior authorization is recommended for single‑anastomosis/hypoabsorptive procedures (e.g., SADI‑S/SADS); requests should include indication, prior bariatric history, informed‑consent discussion of uncertain long‑term risks, and documentation of plan for nutritional monitoring given limited long‑term evidence.

• Provide indication and prior bariatric procedures with dates.
• Document informed consent that describes limited long‑term evidence and potential nutritional risks.
• Include plan for postoperative monitoring and supplementation.

Confirm prior conservative management and follow‑up readiness for ESG/IGB

Prior authorization should confirm documented prior unsuccessful nonsurgical weight‑loss attempts and readiness for follow‑up when requesting endoscopic procedures (ESG) or intragastric balloons — trials generally required prior failure of conservative management and adherence to dietary restrictions and follow‑up.

• Document history of nonsurgical weight‑loss attempts and programs and duration.
• Confirm adherence to required dietary restrictions and scheduled follow‑up.
• Provide evidence of enrollment/participation in multidisciplinary support during device/procedure period.

Require PA and informed‑consent details for VBLOC

Prior authorization is advised for VBLOC (vagal nerve block) devices; authorization should document prior conservative weight‑loss attempts, BMI/comorbidity status, and informed consent acknowledging mixed efficacy and limited long‑term randomized data.

• Document prior conservative management and BMI/comorbidity eligibility.
• Provide informed‑consent discussion addressing ReCharge trial results and uncertain long‑term benefit.
• Include plan for follow‑up and outcome monitoring.

Verify guideline‑based eligibility and multidisciplinary referral in PA

Prior authorization must confirm guideline‑based eligibility (BMI thresholds and qualifying comorbidities) and that the candidate was evaluated by or referred to a multidisciplinary/expert MBS center as applicable.

• Confirm BMI and qualifying comorbidities meet ASMBS/NICE/AAP criteria.
• Document multidisciplinary evaluation or referral to an experienced MBS center.
• For adolescents, document family psychosocial assessment and center expertise.

Document candidacy thresholds and agreement to long‑term follow‑up

Authorization requires documentation that the patient meets BMI/comorbidity candidacy thresholds (e.g., BMI ≥40, or BMI 35–39.9 with significant comorbidity) and agrees to long‑term follow‑up; include evidence of agreement to postoperative monitoring.

• Document BMI and qualifying comorbidity per policy thresholds.
• Document patient agreement to necessary long‑term follow‑up.
• Include plan for postoperative surveillance and management.

Cite guidelines that underpin PA clinical criteria

Guideline and evidence references (ASMBS, AAP, NICE, MBSAQIP, ECRI, Hayes) inform prior authorization expectations and clinical criteria; these sources are cited to support PA clinical requirements though the chunks do not list additional submission items beyond documentation already specified.

• PA clinical criteria are informed by guideline sources cited in the policy.
• References support BMI thresholds, multidisciplinary evaluation, and documentation expectations.
• Sources do not add separate PA forms but inform the required clinical documentation.

Use updated CPT list and indicate procedure type on PA requests

Prior authorization requirements were updated and the applicable CPT code list revised (CPT 43889 was added); authorization requests should indicate the procedure type (initial, planned two‑stage, revision, removal) and include the updated medical‑record documentation described in the policy.

• Use the updated applicable CPT list (note addition of 43889).
• Indicate whether request is initial, planned two‑stage, revision, or removal.
• Attach the updated documentation set required for review.

Document first‑line non‑surgical therapy attempts

Conservative (first‑line) therapies — diet, physical activity, behavior modification, and medication management — should be documented as tried before surgical options when applicable; provide records of program participation and outcomes.

• Document types and duration of nonsurgical treatments tried (diet, exercise, behavioral programs, medications).
• Provide evidence of program participation and outcomes where relevant to PA.

Document conservative therapy and behavioral assessment prior to revision

Before revisional surgery for reflux or inadequate weight loss, document conservative measures attempted (diet/lifestyle modification and medical GERD management including acid‑reducing medications) and behavioral assessment results.

• Provide evidence of dietary and lifestyle interventions and medical GERD therapy trials.
• Document behavioral and medical evaluations addressing contributors to primary surgery failure.

Document staged surgical strategy and preconditions

For planned staged strategies, document the staged treatment plan (e.g., sleeve gastrectomy as first stage with planned second‑stage procedure within 2 years) and that the patient met the policy requirement of initial BMI ≥50 when applicable and adherence to nutrition/exercise.

• Include planned staged surgical timeline and rationale.
• If staged approach invoked, show initial BMI (≥50 kg/m2 when required) and adherence to nutrition/exercise.
• Confirm medical necessity at time of second stage.

Perform and document behavioral assessment before revisional surgery

Before revision, document behavioral and medical contributors to primary surgery failure (eating/lifestyle behaviors, psychiatric evaluation) and evidence of engagement with the medical team, since behavioral causes must be distinguished from anatomical causes.

• Provide behavioral assessment findings and any psychiatric evaluation.
• Document engagement and adherence to recommended lifestyle/behavioral interventions.
• Distinguish anatomical causes from behavioral nonadherence in the record.

Prefer established restrictive procedures before LGCP; document justification if used

Policy notes that LGCP is inferior and less durable than standard procedures; prior authorization/coverage should favor established restrictive procedures (LSG/RYGB) before LGCP and document why LGCP is selected only if justified by individual patient factors.

• Document why established options (LSG/RYGB) are not appropriate or feasible if proposing LGCP.
• Provide evidence of discussion of comparative efficacy and risks with the patient.
• Include rationale and multidisciplinary concurrence for selecting LGCP.

Require established procedures or trial/registry participation before newer endoscopic techniques

For newer endoscopic techniques and devices, require either prior use of established surgical options or enrollment in clinical trials/registries; authorization should document trial enrollment or explicit rationale and informed consent when requesting coverage outside research settings.

• Document enrollment in an appropriate clinical trial or registry when applicable.
• If requesting coverage outside research, provide rationale why standard surgery is unsuitable and informed‑consent discussion of limited evidence.
• Attach procedural standardization and surgeon training details if available.

Document staged escalation of therapy when applicable

Consider a stepwise treatment pathway: document escalation from lifestyle modification to endoscopic therapies to surgical options as clinically appropriate, including prior outcomes at each step to justify progression.

• Provide records showing progression and results of prior interventions (lifestyle, endoscopic, then surgical).
• Document multidisciplinary team decisions supporting escalation.

Document conservative multidisciplinary interventions before surgery

Conservative multidisciplinary interventions (diet, activity, behavioral modification, pharmacotherapy) should be documented prior to surgery where indicated by guidelines; include participation records and duration.

• Document multidisciplinary conservative interventions and duration.
• Provide evidence of pharmacotherapy trials when relevant.

Document prerequisites for device/endoscopic therapies (multidisciplinary support, prior therapy failure)

For device or endoscopic therapy requests (IGB, ESG, etc.), document multidisciplinary support and follow‑up capability and show prior failure of conservative therapy; include device‑specific BMI eligibility where applicable.

• Document multidisciplinary team support and planned follow‑up.
• Show prior conservative therapy failure and duration.
• Confirm device‑specific BMI indications (e.g., Orbera BMI ≥30–≤40) per FDA labeling when applicable.

Confirm device‑specific BMI indications and prior conservative therapy

For devices such as intragastric balloons and adjustable gastric bands, supply documentation that the adult patient meets device‑specific BMI ranges and that conservative measures were attempted and failed; verify contraindications (e.g., bands contraindicated <18 years).

• Confirm device BMI indication (e.g., Orbera: BMI ≥30 and ≤40).
• Provide records of failed conservative measures and program participation.
• Check and document device‑specific contraindications (age, prior surgeries).

Include detailed preoperative and psychosocial documentation for PA

Supply preoperative and psychosocial documentation: obesity‑focused history, prior weight‑loss attempts/programs, assessment of comorbidities, psychosocial‑behavioral evaluation, and participation in a multidisciplinary preparatory regimen as required for PA review.

• Include obesity‑focused history and physical exam elements.
• List prior weight‑loss attempts, programs, and maximal sustained weight loss.
• Attach psychosocial‑behavioral evaluation or documentation of multidisciplinary preparatory participation.

Use policy code list for claim submissions (reference only)

When submitting claims, reference the policy's listed CPT and unlisted codes for coding guidance; note that listing a code is reference only and does not guarantee coverage — verify member benefit and contractual requirements.

• Include the applicable CPT/unlisted code(s) on claims as referenced in the policy.
• Remember that code listing is for reference and does not assure coverage or reimbursement.

Provide detailed documentation distinguishing anatomical vs behavioral causes for revision

For revisional surgery authorization, document multidisciplinary assessment findings, explicitly identify whether inadequate weight loss/regain is anatomical vs behavioral, and include prior measures attempted and operative/complication history.

• Provide multidisciplinary assessment and risk/benefit analysis.
• Document anatomical findings (e.g., leak, obstruction) or behavioral causes with supporting evidence.
• Attach operative reports and prior complication details.

Include objective diagnostic confirmation for GERD‑driven revisional surgery

Objective diagnostic confirmation (for example, wireless Bravo pH monitoring) should be included when revisional surgery is for GERD or when objective testing was used to confirm reflux prior to conversion (e.g., LSG to RYGB).

• Attach objective testing results used to confirm GERD (e.g., pH monitoring reports).
• Include documentation that medical management for GERD was attempted prior to revisional surgery.

Attach operative details, prior procedure, weight trajectory, and complication history for revisional PA

Required documentation for revisional procedures includes operative details and indication for revision; prior procedure type and date; documentation of prior weight‑loss trajectory; and any complications necessitating revision.

• Operative report(s) and details of the planned revisional procedure.
• Date and type of the initial bariatric surgery.
• Weight‑loss trajectory before and after the index operation.
• Complications and interventions that justify revision.

Include baseline and follow‑up functional mobility testing for adolescents when available

For adolescents, include baseline functional mobility testing (e.g., 400‑m walk test) and follow‑up measurements used in outcome assessments when available to support the clinical record.

• Provide baseline 400‑m walk test results and follow‑up at 6, 12, and 24 months if available.
• Include reports of functional mobility and musculoskeletal pain assessments.

Document trial/procedure standardization and follow‑up details when applicable

When PA is informed by trial data or device pivotal studies, include trial/procedure details that reflect participant selection, standardization, surgeon training, follow‑up intervals, and outcome metrics if these data relate to the requested intervention.

• Attach relevant trial design or procedural standardization details if extrapolated to the patient's case.
• Document planned follow‑up intervals and outcome metrics aligned with trial protocols when applicable.

Include trial‑aligned follow‑up and prior trial‑style eligibility documentation

Clinical trial evidence and pivotal studies specify follow‑up intervals and outcomes (TBWL, EWL); include documentation of prior failed nonsurgical weight loss attempts and participation in lifestyle/diet programs as used in trials to support PA.

• Provide documentation of participation in supervised lifestyle/diet programs.
• Include prior failed nonsurgical attempts as documented in trial eligibility (dates/duration).
• State planned follow‑up intervals consistent with evidence standards.

Provide comprehensive preoperative obesity‑focused evaluation

Preoperative evaluation documentation should include a comprehensive obesity‑focused history, weight history, prior weight‑loss attempts and programs, assessment of comorbid conditions, and pertinent labs/diagnostics as recommended by guideline sources.

• Document obesity onset, severity, and recent weight trends.
• List prior weight‑loss attempts and physician‑supervised programs.
• Provide assessment of comorbidities and pertinent diagnostic testing/labs.

Document multidisciplinary adolescent evaluation and family psychosocial assessment

Adolescent PA must include multidisciplinary evaluation documentation addressing the patient and family (physical, psychosocial, social risk factors), family stability, and referral to an experienced pediatric MBS center.

• Include multidisciplinary assessment of patient and family and social risk factors.
• Document psychological evaluation of family stability as applicable.
• Confirm referral to or evaluation at an experienced pediatric MBS center.

Document preoperative psychological evaluation and counseling

Preoperative psychological evaluation by a licensed mental health provider experienced with severely obese patients is recommended and should be documented; include counseling on motivation, expectations, and behavioral readiness.

• Attach psychological evaluation report by a licensed mental health professional.
• Document counseling on expectations, motivation, and behavioral readiness.
• Note any identified psychiatric issues and management plans.

References that inform prior authorization clinical expectations

Use the policy references and guideline citations to support clinical decision‑making for PA reviews; these sources inform clinical thresholds and documentation expectations though they do not add separate submission items beyond those listed.

• Cited guidelines (ASMBS, AAP, NICE, MBSAQIP) underpin BMI thresholds and documentation expectations.
• References are for clinical support and do not replace required documentation items.
• Ensure submissions reference relevant guideline‑aligned clinical criteria when helpful.

Submit full medical records per updated documentation checklist

Provide complete medical records for review: indicate requested procedure type (initial/planned two‑stage/revision/removal); preoperative evaluation; physical activity patterns; recent diagnostic testing; physician's treatment plan; current and two‑year BMI history; treatments tried/failed/contraindicated (dates/duration/reason); and psychosocial behavioral evaluation or multidisciplinary preparatory participation.

• Indicate procedure requested and whether initial, planned two‑stage, revision, or removal.
• Attach preoperative evaluation, activity patterns, and recent diagnostic testing.
• Provide current and two‑year BMI history and treatments tried/failed/contraindicated with dates/duration/reason.
• Include psychosocial behavioral evaluation or proof of multidisciplinary preparatory regimen participation.

Insufficient documentation may cause denial

Insufficient medical-record documentation to demonstrate that the member meets the policy's clinical criteria may result in denial of coverage or delayed authorization.

• Ensure all required documentation elements are included; incomplete records risk denial.
• Follow the policy's updated medical‑record checklist to avoid insufficiency.

Code listing is reference only—verify benefits

Listing of a CPT or unlisted code in the policy does not by itself imply the service is covered; verify federal, state, and contractual benefit plan rules for coverage and reimbursement before submission.

• Confirm member benefit and contractual coverage prior to scheduling/claim submission.
• Do not assume coverage solely because a code appears in the policy's code list.

Thorough multidisciplinary preassessment required for revisional PA

Failure to document a thorough multidisciplinary preassessment and individualized risk/benefit consideration for revisional bariatric surgery can trigger denial or be considered insufficient justification for revision.

• Provide detailed multidisciplinary assessment and individualized risk/benefit analysis.
• Document alternatives tried and specific anatomical findings or complications prompting revision.

Evidence limitations for specific revisional procedures may trigger denials

Insufficient high‑quality evidence for certain revisional procedures (particularly after primary RYGB) may lead to denials; prior authorization should include strong clinical justification, outcomes expectations, and literature‑informed rationale when evidence is limited.

• Provide clear clinical justification and rationale when proposing revisional procedures with limited evidence.
• Include outcomes expectations and plan for monitoring and management of known risks.

Investigational procedures (e.g., LGA embolization) risk denial

Because procedures like bariatric artery embolization are investigational/unproven, requests for these interventions may be denied; document rationale and note that limited, heterogeneous evidence and uncertain long‑term safety were cited in the policy.

• Do not expect routine coverage for investigational procedures (e.g., LGA embolization); provide exceptional‑case justification if requested.
• Acknowledge evidence limitations and safety concerns when submitting requests.

Evidence insufficiency for newer endoscopic/single‑anastomosis procedures may lead to denial

Insufficient long‑term evidence for many endoscopic and newer single‑anastomosis procedures may lead to denial where long‑term safety/efficacy is required; include long‑term follow‑up and nutritional monitoring plans to address evidence gaps.

• Provide long‑term follow‑up plans and nutritional monitoring strategies for newer procedures.
• Document why standard options are unsuitable if requesting coverage outside research contexts.