Anesthesia Services - Professional
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Governs reimbursement rules for professional anesthesia services (time reporting, modifiers, bundled vs separately reimbursable services, and qualifying circumstances) for Blue Cross Blue Shield - Nevada commercial plans.
No material clinical or coverage changes in this revision.
Coverage Criteria and Reimbursement Rules
COVERAGE CRITERIA — Rules governing reimbursement, bundling, and separate payment eligibility for anesthesia professional services
The Health Plan allows reimbursement for anesthesia professional services when billed in accordance with the American Society of Anesthesiologists (ASA) anesthesia formula, applicable modifiers, and documented medical record evidence. The following rules govern time reporting, modifiers, multiple procedures, field avoidance/unusual positioning, oral surgery anesthesia, and services included or excluded from global anesthesia reimbursement.
ALL of the following
- Time must be reported in one-minute increments and documented as such in the medical record. Reimbursement units are calculated by dividing total minutes by 15 and rounding to the nearest tenth. Start and stop times must be documented; anesthesia time begins with preparation for administration and ends when the anesthesia provider is no longer in personal attendance. Time may be counted in continuous blocks if interruptions occur, provided continuous anesthesia was furnished.
Claims submitted with an indicator other than minutes may be rejected or denied.
- Anesthesia services must be reported with appropriate anesthesia procedure codes and, when applicable, a physical status modifier and/or servicing modifier. Modifiers identifying who performed the anesthesia must be billed in the primary modifier field to receive appropriate reimbursement. Claims without the appropriate modifier will be denied.
Total reimbursement for services provided by a physician/anesthesiologist and a non-physician anesthesia provider will not exceed 100% of the eligible amount for a single-provider service.
- When anesthesia services are provided for multiple surgical procedures, only the anesthesia procedure code for the most complex (primary) service should be reported. Base units apply only to the primary procedure; secondary procedures are not separately reimbursed. If two separate anesthesia codes are reported, the lesser will be denied. Exceptions: add-on codes 01953, 01968, and 01969 may be reported in addition to the primary procedure and are eligible for separate reimbursement.
If documentation supports a separate subsequent operative session with more than one hour separation from the initial anesthesia, a second anesthesia service may be eligible for separate reimbursement.
- For procedures around the head, neck, or shoulder girdle requiring field avoidance, or procedures requiring positions other than supine or lithotomy, the minimum base value allowed is 5 regardless of a lesser assigned base value. Unusual positioning is not eligible for additional reimbursement even when reported with modifier 22.
- For oral surgery anesthesia, reimbursement is allowed when reported with appropriate CDT-based anesthesia codes (D9211–D9248). CPT anesthesia codes 00170–00176 (intraoral procedures) are not eligible for reimbursement when reported with CDT procedures. CDT anesthesia codes D9211–D9248 are not eligible for separate reimbursement when reported with CPT procedure codes. If an oral surgeon reports the surgical procedure with a CPT code and also provides an anesthesia service, modifier 47 must be appended; no additional reimbursement for anesthesia will be made — only the oral surgery procedure is eligible for reimbursement.
Postoperative pain management reimbursement criteria — Rules for reimbursement of postoperative pain management services by anesthesiologists
Postoperative pain management services performed by an anesthesiologist may be eligible for separate reimbursement subject to the conditions below.
ALL of the following
- Postoperative pain management services such as an injection or catheter insertion into the epidural space or major nerve are eligible for separate reimbursement. Time units are not applicable for these postoperative pain management procedural codes. This applies to codes/ranges: 62320-62327 and 64400-64450.
When performed bilaterally, report the unilateral code once with modifier 50 using the unilateral base value; the service will be reimbursed at 150% of the allowance for the code.
- An epidural or major nerve injection or catheter insertion performed by an anesthesiologist for postoperative pain management before, during, and/or following the surgical procedure is eligible for separate reimbursement in addition to the primary anesthesia code when documentation supports a distinct procedural service. The appropriate modifier must be appended to indicate a distinct procedural service.
Modifiers will not override edits that consider services incidental.
- Daily hospital management of epidural or subarachnoid continuous drug administration (CPT code 01996) is eligible for reimbursement once per date of service following the surgery date. However, when 01996 is billed with an anesthetic injection code such as 62320-62327, only the injection code is eligible for reimbursement. The Health Plan will deny 01996 when billed with a physical status modifier or qualifying circumstance procedure code.
Coverage and billing requirements — High-level coverage stance and billing expectations; claims must meet member benefit, authorization, medical necessity, and coding/billing rules.
Claims for anesthesia services must meet member benefit coverage, prior authorization (when required), medical necessity, and coding/billing guidelines. The Health Plan follows NCCI and industry-standard coding rules; failure to follow applicable coding/billing guidelines may result in claim denial, rejection, or recovery of payment.
ALL of the following
- Providers must use proper CPT, HCPCS, and/or revenue codes that are fully supported in the medical record. Services should be billed in accordance with applicable coding guidelines and modifiers; when appropriate coding/billing guidelines or current reimbursement policies are not followed, the Plan may reject or deny the claim and may recover/recoup payments.
Claims must be supported by documentation in the medical record including start/stop times, procedure details, and modifiers used.
- Certain procedures are considered included in the global anesthesia reimbursement and are not separately reimbursable. Examples include daily hospital management of patient-controlled analgesia, echocardiography, electroencephalogram, inhalation treatments, laryngoscopy/bronchoscopy, placement and interpretation of non-invasive monitoring (ECG, temperature, blood pressure, pulse oximetry, capnography), placement of endotracheal and naso-gastric tubes, Swan-Ganz catheter insertion, central venous pressure line insertion, and intra-arterial lines.
Transesophageal echocardiography (TEE): if TEE is performed as a distinct and independent procedure from the anesthesia service, the appropriate modifier must be appended to the TEE code (93312-93317) to be eligible for separate reimbursement. If TEE services are for monitoring (e.g., 93318) or guidance of structural interventions (e.g., 93355), NCCI logic will consider those codes incidental and a bypass modifier will not override the edit.
- Anesthesia modifiers identifying who performed the service must be billed correctly; NCCI/Bundling edits and Anthem/NV-specific edits apply. Providers should follow payer-specific guidance for modifier usage to avoid denials.
Coding, Units, and Code Lists
| D9211-D9248 | CDT anesthesia codes for oral surgery |
| 00170-00176 | CPT anesthesia codes for intraoral procedures (not eligible when reported with CDT) |
| No codes listed |
| 62320-62327 | Epidural or major nerve injection or catheter insertion (postoperative pain management) |
| 64400-64450 | Major peripheral nerve blocks (postoperative pain management) |
| 62320-62327 | Spinal injection codes referenced for postoperative pain management |
| 64400-64450 | Major peripheral nerve block injection codes referenced for postoperative pain management |
| 01996 | Daily hospital management of epidural or subarachnoid continuous drug administration |
| CPT, HCPCS, Revenue codes | Services should be billed with CPT, HCPCS and/or revenue codes and supported in the medical record. |
Provider Billing Requirements and Actionable Rules
Anesthesia Modifiers and Billing
Anesthesia modifiers are appended to the applicable procedure code to indicate the specific anesthesia service or to indicate who performed the service. Modifiers identifying who performed the anesthesia must be billed in the primary modifier field to receive appropriate reimbursement. Claims submitted for anesthesiology services without the appropriate modifier will be denied. The total reimbursement for anesthesia services provided by a physician/anesthesiologist and a non-physician anesthesia provider will not exceed 100% of the eligible amount that would be allowed had the anesthesia service been provided by only the physician/anesthesiologist.
- Append appropriate anesthesia modifiers (including who performed the service) in the primary modifier field.
- Claims without appropriate modifier may be denied.
- Combined physician and non-physician anesthesia reimbursement will not exceed 100% of the eligible physician-only amount.
Time Reporting Requirements
Providers must report anesthesia services in one-minute increments and note minutes in the claim. To calculate reimbursement for time, divide the number of minutes reported by 15 and round to the nearest tenth to determine time units. Anesthesia claims submitted with an indicator other than minutes may be rejected or denied. Start and stop times must be documented in the member's medical record. Anesthesia time begins with preparation of the member for administration of anesthesia and stops when the anesthesia provider is no longer in personal attendance. Interrupted anesthesia may be counted in blocks if the documented time reflects continuous anesthesia services provided.
- Report anesthesia time in minutes; report minutes in the units field.
- Calculate units: minutes ÷ 15, rounded to nearest tenth.
- Start and stop times must be documented in the medical record.
Postoperative Pain Management and Daily Management Limitations
Postoperative pain management services by an anesthesiologist, such as an injection or catheter insertion into the epidural space or a major nerve, are eligible for separate reimbursement when criteria below are met. Time units are not applicable to these services. When performed bilaterally, report the unilateral code once with modifier 50; payment will be 150% of the unilateral allowance. An epidural or major nerve injection or catheter insertion performed by an anesthesiologist for postoperative pain management before, during, and/or after the primary surgical anesthesia may be eligible for separate reimbursement in addition to the primary anesthesia code when a distinct procedural service is documented and the appropriate modifier is appended. The daily hospital management code (CPT 01996) is eligible for reimbursement once per date of service following the surgery date; however, when 01996 is reported with anesthetic injection codes such as 62320-62327, only the injection code is eligible for reimbursement and modifiers will not override these edits. The Health Plan will deny CPT 01996 when billed with a physical status modifier or certain qualifying circumstance procedure modifiers in specified combinations.
- Postoperative pain management codes/ranges: 62320-62327, 64400-64450 — eligible for separate reimbursement; time units not applicable.
- When performed bilaterally, report unilateral code once with modifier 50; payment = 150% of unilateral allowance.
- Epidural or major nerve injection/catheter for postoperative pain may be reimbursed separate from primary anesthesia when a distinct procedural service is documented and appropriate modifier appended.
- CPT 01996: reimbursable once per date of service following the surgery date; not eligible when reported with CPT 62320-62327 (only injection code payable). Modifiers will not override these edits.
- The Health Plan will deny CPT 01996 when billed with a physical status modifier or qualifying circumstance procedure modifier in certain combinations.
Authorization and Medical Necessity
Services must meet any applicable authorization and medical necessity requirements and be consistent with the member's benefits. Use proper billing and submission guidelines, including industry-standard CPT, HCPCS, and revenue codes. All billed services must be supported in the medical record and/or office notes. Failure to follow coding/billing guidelines or current reimbursement policies may result in claim rejection or denial, and the Health Plan may recover and/or recoup claim payment. Reimbursement policies may be superseded by provider, state, federal, or CMS mandates.
- Obtain prior authorization when required by the member's benefit plan or the Health Plan's medical review rules.
- Ensure medical necessity is documented and supported in the medical record for the procedure and diagnosis.
- Bill services with current, appropriate CPT/HCPCS/revenue codes and append required modifiers.
- Noncompliance with coding/billing or documentation requirements may lead to claim denial, rejection, or recoupment.
Definitions and Terminology
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