Prior authorization required

Obtain prior authorization before bariatric procedures; the request must demonstrate that medical necessity criteria are met (BMI meeting policy thresholds, relevant comorbidities, completion of required preoperative evaluations, and mental health clearance).

• Prior authorization is required for listed bariatric procedures and associated CPT/HCPCS codes.
• Authorization requests must document medical necessity per policy criteria.

Required supporting documentation for authorization

Include complete supporting documentation with the prior authorization: calculated BMI (with Asian-specific thresholds when applicable), documentation of obesity-related comorbidities, evidence of participation in a physician‑administered weight‑loss program (≥3 continuous months within 12 months pre‑op), and mental health evaluation and clearance by a licensed mental health provider (a surgeon summary letter alone is insufficient).

• Record member weight and BMI calculation (see BMI calculation guidance).
• Document program name, dates, and evidence of active participation (weight, diet, exercise).
• Provide licensed mental health provider evaluation and clearance; a provider summary letter alone does not meet this requirement.

Use applicable procedure codes on authorization

Reference the applicable CPT/HCPCS codes on authorization requests and claims for the specific bariatric procedure being requested; include unlisted code details when applicable and ensure coding matches the planned technique (open vs laparoscopic) and procedure type.

• Use listed CPT codes for procedures such as 43644, 43645, 43770, 43775, 43845, 43846, 43847, etc., as appropriate to the procedure.
• Include HCPCS/CPT modifiers or technique descriptors that reflect open vs laparoscopic approach when relevant.

Unlisted coding for SADI‑S (use 43999)

For SADI‑S (single anastomosis duodeno‑ileal bypass with sleeve gastrectomy) use unlisted stomach procedure code 43999 for prior authorization and claims because there is no specific CPT code for this procedure.

• Include a detailed operative description and rationale when submitting 43999 for SADI‑S.
• Attach intraoperative or surgeon documentation to support use of an unlisted code for clinical review.

Document BMI and comorbidities for prior auth

Provide BMI and comorbidity documentation in the authorization request: cite relevant BMI threshold (e.g., BMI ≥40, BMI 35–39.9 with an obesity‑related comorbidity, or BMI 30–34.9 with inadequately controlled T2D) and list documented obesity‑related conditions that support coverage.

• Document diabetes control (e.g., HbA1c ≥7) when claiming T2D indication.
• Clearly indicate which policy BMI threshold is being met (including Asian‑specific thresholds when applicable).

Verify FDA‑labeled device indications for device authorizations

Confirm device labeling and FDA‑approved indications for implantable bariatric devices when requesting authorization; verify device‑specific eligibility criteria and labeled time limits (e.g., intragastric balloon placement duration and BMI ranges).

• Match member's BMI and comorbidity profile to device labeled indications (e.g., ORBERA, Spatz3, AspireAssist, LAP‑BAND, REALIZE).
• Note device‑specific maximum placement durations (e.g., 6–8 months for certain balloons) in the request.

Guidelines do not replace payer authorization

Do not rely on cited professional guideline references alone to determine payer authorization rules; guidelines inform expectations but the policy does not substitute for obtaining company prior authorization per member benefits.

• Guideline citations (ASMBS, IFSO, ASGE, etc.) inform clinical expectations but do not define payer-specific prior authorization workflows.
• Providers must request authorization per the health plan's processes and benefit terms.

Obtain pre‑procedure authorization per plan rules

Obtain authorization prior to the procedure per member benefit requirements; this policy serves as guidance for Company staff but providers must secure pre‑procedure authorization when required by the plan.

• Authorization is implied by the policy as the basis for Company coverage determinations.
• Verify whether the member's plan requires preauthorization and obtain it accordingly.

Document failed conservative therapy (3‑month program)

Document participation in and failure of conservative measures before surgery: physician‑administered weight‑reduction program of at least three continuous months (within 12 months before surgery) is expected, and for OSA document trial and failure of CPAP/BiPAP or oral appliances when applicable.

• Evidence of active participation should include weight records, named dietary program, and exercise regimen.
• For OSA, document polysomnography and definition of CPAP/BiPAP failure (residual AHI ≥15 or inability to tolerate therapy).

Document failed medical weight‑loss attempts

Before considering surgery, show documentation of failed conservative weight‑loss measures (medical weight loss attempts); some centers may require active participation in a formal supervised program with frequent documentation of weight, diet, and exercise.

• Include records from structured programs (e.g., Weight Watchers, Jenny Craig) with provider supervision if used.
• Provide dates and duration of the supervised program within the 12‑month preoperative window.

Expect documented dietary/lifestyle interventions prior to surgery

Convey that dietary and lifestyle interventions are expected before surgery and that bariatric procedures are considered when these conservative measures have failed to achieve needed weight loss.

• Document prior non‑surgical management attempts and rationale for proceeding to surgery.
• Ensure conservative therapy efforts are summarized in the medical record submitted for review.

Specify indication tier by BMI and comorbidity

Indicate which BMI/comorbidity tier supports the request: class III (BMI ≥40), class II (BMI 35–39.9) with at least one severe obesity‑related comorbidity, or class I (BMI 30–34.9) with inadequately controlled T2D despite optimal therapy.

• State the specific comorbidity(ies) qualifying the request (e.g., uncontrolled T2D, OSA, NAFLD).
• If the member is Asian, use adjusted BMI thresholds per policy.

Document consideration/role of non‑surgical or short‑term therapies

When considering non‑surgical or short‑term procedural options (e.g., intragastric balloons), document that these therapies were considered or tried as per guideline context and whether short‑term adjunctive approaches are appropriate to the member's goals.

• Note that intragastric balloons may be considered for short‑term (~6 months) weight loss alongside lifestyle interventions.
• If an endoscopic therapy is planned, include documentation of guideline‑based candidacy and monitoring plans.

Include safety monitoring plan for intragastric balloons

For intragastric balloons, include counseling and monitoring plans in the authorization and medical record because FDA safety communications recommend close monitoring and patient counseling regarding potential serious adverse events (e.g., hyperinflation, pancreatitis, obstruction, premature removal).

• Document patient counseling on symptoms of life‑threatening complications and a monitoring plan for the duration of balloon treatment.
• Confirm device brand and labeled maximum placement time in the request.

No specific step‑therapy requirements stated

No formal step‑therapy protocol is specified in the references; do not assume a payer step‑therapy sequence beyond the policy's expectation of documented conservative management and program participation.

• References summarize guideline approaches but do not define explicit payer step‑therapy requirements.
• Authorization decisions are based on documented failure of conservative measures, not a specified step sequence in these references.

Provide supervised program participation dates and evidence

When documenting program participation history, provide dates and duration of supervised weight‑reduction participation; historically requirements changed from six to three months, so supply current documentation of at least three continuous months (90 days) within 12 months pre‑op.

• State program start and end dates and the supervising provider or program name.
• Include weight trend data during the program to show active participation.

Required preoperative documentation for review

Ensure medical records submitted for authorization include BMI calculation (with Asian‑specific thresholds when applicable), documented comorbid conditions, completion details of a physician‑administered weight‑loss program of ≥3 consecutive months within 12 months pre‑op, and mental health evaluation and clearance by a licensed mental health provider.

• Include BMI calculation method and source data (weight, height, dates).
• Provide documentation of program content, duration, and active participation.

Include program details and weight data in records

When submitting preoperative documentation, include program details (name of program or supervising clinician), specific weight measurements and dates, and calculation of weight‑loss metrics when relevant (percent EWL, percent TWL).

• Attach program notes showing member weight at program start and end, dietary plan, and exercise regimen.
• Provide EWL and TWL calculations using provided formulas when applicable.

Provide BMI and weight‑loss calculations

Include BMI calculations and, when relevant, weight‑loss calculations such as percent excess weight loss (EWL) and percent total weight loss (TWL) in the medical record submitted for authorization or utilization review.

• Use the policy's BMI calculation guidance and the provided formulas for EWL and TWL.
• Document preoperative and most recent weights with dates to permit calculation.

Document EGD indication, findings, and impact on planning

If a preoperative EGD is performed, document the indication (symptoms vs surgeon discretion), findings, and how findings affected management or operative planning; use high‑quality visualization and standard classifications when available.

• Record whether EGD was performed for symptoms or at surgeon discretion and summarize findings (e.g., large hiatal hernia, peptic ulcer, H. pylori).
• Document any operative changes or delays resulting from EGD findings.

Document comprehensive preoperative evaluation

Perform and document a comprehensive preoperative evaluation for weight‑related complications and causes of obesity per guideline recommendations; record factors that affect the recommendation for surgery (medical, psychosocial, developmental for adolescents).

• Include assessment of comorbid conditions and how surgery is expected to address them.
• For adolescents, include multidisciplinary evaluation and developmental/readiness documentation.

Include society‑recommended preoperative evaluation elements

Follow society‑recommended pre‑operative evaluation components in documentation: weight‑related complication assessment, causes of obesity, psychosocial and developmental factors (for adolescents), and factors that affect operative suitability.

• Cite relevant guideline recommendations used to support clinical decisions in the record.
• Provide documentation of multidisciplinary input when required.

Justify and document preoperative EGD indication and technique

When EGD is performed preoperatively, document the indication carefully since routine EGD identifies management‑changing findings in only about 20% of patients; justify routine versus symptom‑guided EGD and record findings using high‑quality technique and established classifications.

• If routine EGD is performed at surgeon discretion, state the rationale and any findings that altered care.
• Ensure endoscopy reports document high‑definition visualization and standard terminology per AGA guidance.

Reference guideline documents to support documentation

Cite relevant professional guideline documents (ASMBS, AACE/ACE, AGA, ASGE, VA/DoD, AAP, etc.) in the clinical record to support documentation expectations and preoperative planning when applicable.

• Include guideline references used to inform the preoperative plan when they support the medical necessity rationale.
• Do not substitute guideline citation for the required documentation items described in policy.

Confirm member benefits and plan limitations

Verify member benefit limitations and preauthorization requirements with the member's benefit booklet or customer service prior to submission; coverage is subject to plan limits and conditions and this policy does not apply to Medicare Advantage.

• Confirm whether the member's plan includes coverage for bariatric procedures and any age or benefit limits.
• Contact customer service or consult the benefit booklet to confirm authorization workflow and plan‑specific limits.

Do not request coverage for investigational/not‑necessary procedures

Avoid requesting coverage for procedures listed as investigational or not medically necessary (e.g., vertical‑banded gastroplasty, long‑limb gastric bypass >150 cm, endoscopic primary bariatric procedures, intragastric balloons and certain endoscopic revision procedures) as these are triggers for denial.

• Do not submit authorization requests for explicitly investigational or not medically necessary procedures per policy.
• If a procedure is investigational, provide alternative, evidence‑based treatment plan and rationale.

Include licensed mental health evaluation and clearance

Include a licensed mental health provider evaluation and clearance in the preoperative record; absence of documented mental health assessment and clearance (a provider summary letter alone is insufficient) may trigger denial.

• Mental health evaluation must rule out contraindicating disorders, inability to consent, or inability to comply with perioperative requirements.
• Do not rely on surgeon summary letters alone to satisfy this requirement.

Risk of denial for missing conservative management documentation

Failure to document participation in and active engagement with a structured weight‑loss program (including weight records, dietary program name, and exercise documentation) or lack of documented failure of conservative measures may result in denial of surgical approval.

• Provide objective evidence of program participation and failure to achieve adequate weight loss with conservative therapy.
• If structured programs were used, include supervising provider documentation.

EGD indication must be documented when performed

If preoperative EGD is performed, document the appropriate indication; failure to document a legitimate indication (symptoms or justified surgeon discretion) and associated findings may prompt utilization review or denial.

• State whether EGD was symptom‑driven or performed at surgeon discretion and summarize findings and their effect on management.
• Ensure endoscopy reports use standard classifications and adequate visualization techniques.

Routine preoperative EGD may be scrutinized

Note that routine preoperative EGD changes operative management in only about 20% of cases; when EGD is submitted as routine rather than symptom‑indicated, reviewers may scrutinize its justification and this could affect authorization outcomes.

• If ordering routine EGD, include rationale for surgeon discretion and any prior symptoms or risk factors prompting the test.
• Attach the EGD report and explain any management changes resulting from findings.

Document absence of contraindications (or address them)

Screen for and document contraindications that could preclude surgery (e.g., medically correctable causes of obesity, untreated or poorly controlled substance abuse, pregnancy/planned pregnancy, active eating disorder, or inability to adhere to postoperative requirements), as their presence may trigger denial.

• Document treatment or resolution of any medically correctable cause of obesity before proceeding.
• If contraindications exist, include plans for management or stabilization prior to reconsideration.

Medicare noncoverage may trigger denial for listed procedures

Be aware Medicare NCD noncoverage listings when authorizing for Medicare beneficiaries: certain procedures (open and laparoscopic sleeve gastrectomy, open adjustable gastric banding, vertical banded gastroplasty) are listed as noncovered for Medicare and may lead to denial under Medicare rules.

• For Medicare patients, verify NCD applicability and do not expect Medicare coverage for procedures listed as noncovered in the NCD.
• If treating a Medicare beneficiary, include NCD‑supported procedures and ensure documentation aligns with Medicare criteria.

Follow payer operational authorization process (not defined in references)

References and guideline sections do not state operational prior authorization workflows; providers must follow the payer's operational authorization processes and submit the documentation required by the plan.

• The policy cites guidelines but does not provide plan‑specific operational steps for authorization.
• Contact the payer or use the payer's portal/process to submit required documents.

Benefit limitations can cause denial—verify plan specifics

Coverage decisions are subject to member benefit limits; verify plan‑specific limitations (age, number of procedures, device coverage) prior to submitting an authorization because benefit limits can cause denial.

• Confirm whether the member's plan excludes certain procedures or devices.
• If benefit limitations apply, document that the requested service is within plan allowances.