Ultrasound Guidance - Selected Indications — CPB 0952 | AETNA Coverage Update

TL;DR: Aetna, a CVS Health company, modified CPB 0952 — its ultrasound guidance coverage policy — effective February 14, 2026. Here's what billing teams need to know.

CPB 0952 Aetna governs medical necessity for ultrasound guidance across dozens of procedures, from nerve blocks and biopsies to vascular access and joint injections. The primary billing codes at stake are CPT 76937, 76942, and 76998. This update affects a wide range of specialties, and if your practice bills ultrasound guidance routinely, this policy deserves close attention before claims go out the door.

Aetna Ultrasound Guidance Coverage Policy: Medical Necessity Requirements 2026

The Aetna ultrasound guidance coverage policy under CPB 0952 uses a selected-indications model. That means ultrasound guidance isn't automatically covered for every procedure that could theoretically benefit from it. Aetna covers it when a specific indication appears on their approved list — and not covered means not covered, regardless of clinical rationale.

The core guidance CPT codes are 76937 (ultrasound guidance for vascular access), 76942 (ultrasonic guidance for needle placement — biopsies, aspirations, injections, localization), and 76998 (ultrasonic guidance, intraoperative). Each of these carries coverage only when the underlying procedure meets the stated medical necessity criteria.

Some indications have a "failure of unguided procedure" requirement. Baker's cyst aspiration, barbotage for intra-tendinous supraspinatus calcium deposits, and elbow joint injection or aspiration all require documentation that an unguided approach was tried first and failed. If you're billing ultrasound guidance for these without that documentation, expect a claim denial.

Other indications have patient-specific criteria. Breast abscess or cyst aspiration under CPT 76942 is covered only when the lesion is non-palpable or loculated. Fine-needle aspiration for neck mass biopsy is covered only when the lesion isn't palpable or the initial palpation-guided biopsy failed. These aren't vague qualifiers — they're hard documentation requirements. Your chart notes need to support the specific criterion, not just record that ultrasound was used.

For incobotulinumtoxinA injection for chronic sialorrhea, Aetna restricts ultrasound guidance to pediatric members age two or older. That's a narrow, age-specific criterion. If your practice treats adult patients with this indication, ultrasound guidance reimbursement is not available under this policy.

The policy doesn't list a blanket prior authorization requirement for ultrasound guidance codes. But individual plans vary, and high-dollar imaging guidance codes frequently trigger prior auth requirements at the plan level. Check plan-specific benefits before assuming you're clear to bill without prior authorization.

This coverage policy references several companion CPBs. Breast mass biopsy flows to CPB 0269. Infertility procedures including embryo transfer flow to CPB 0327. Varicose vein procedures including endovenous laser ablation of the saphenous vein flow to CPB 0050. Nerve blocks including lateral femoral cutaneous nerve block for meralgia paresthetica reference CPB 0863. If you're billing those procedures, you need to be current on those policies too — not just CPB 0952.

Aetna Ultrasound Guidance Exclusions and Non-Covered Indications

The policy draws a clear line on certain procedures. Several codes are listed specifically as not covered or are grouped as indications without CPB 0952 coverage support.

CPT 77439 (surface radiation therapy with ultrasound image guidance for placement of a surface applicator) is explicitly listed as not covered for indications in this CPB.

A significant group of procedures — including erector spinae plane (ESP) block, gluteal nerve injection, and several others — appear in a separate group. These procedures are listed in the code tables but carry restrictions or are not independently covered under this policy. The group label suggests these indications are either excluded or require additional criteria not addressed by CPB 0952 directly.

The policy also doesn't cover ultrasound guidance for:

The ESP block exclusion is worth flagging directly. Erector spinae plane blocks have grown in popularity for post-operative pain management. Aetna's CPB 0952 does not support coverage for ultrasound guidance billed alongside this block. If your anesthesia or pain management team is routinely adding 76942 to ESP block encounters, those claims are at risk.

If your practice has high volume in any of these areas, loop in your compliance officer before the effective date to review existing billing patterns.

Coverage Indications at a Glance

Aetna Ultrasound Guidance Billing Guidelines and Action Items 2026

1. Audit your charge capture for 76937, 76942, and 76998 against the updated indication list.
The February 14, 2026 effective date means claims for dates of service on or after that date need to align with CPB 0952 as modified. Pull a report of claims billed with these codes and map each against the covered indication list. Any indication not on the list is a denial risk.

2. Update clinical documentation templates to capture indication-specific criteria.
For procedures that require failure of unguided approach — Baker's cyst, barbotage, elbow joint injection — your documentation needs an explicit note that the unguided approach was attempted and failed. A generic "ultrasound guidance used" note won't cut it. Work with your providers to add a structured field or attestation to the encounter note.

3. Flag ESP block encounters for billing review now.
If your anesthesia or pain management team bills 76942 alongside ESP block procedures, those claims won't be supported under this policy. Identify those encounters in your system before they go out. Correcting this pre-submission is far cheaper than working denials.

4. Verify plan-level prior authorization requirements before billing high-volume guidance codes.
CPB 0952 doesn't mandate prior authorization across the board, but individual Aetna plans often do for imaging guidance codes. Check prior auth requirements by plan for 76942 and 76937 especially — these are the codes most likely to trigger utilization management edits.

5. Cross-reference companion CPBs for procedures that reference them.
Embryo transfer, breast biopsy, varicose vein ablation, nerve blocks, and vena caval filter placement all point to other CPBs. Update your billing guidelines to note these cross-references. If those companion policies were also updated recently, you need current criteria from each one, not just CPB 0952.

6. Educate your coders on age-specific and condition-specific restrictions.
The pediatric-only criterion for incobotulinumtoxinA injection for sialorrhea is exactly the kind of nuance that gets missed in bulk charge capture. Build edits or alerts in your billing system to flag adult patients billed with this combination. One clean pre-submission edit saves hours of denial management.

CPT, HCPCS, and ICD-10 Codes for Ultrasound Guidance Under CPB 0952

Covered CPT Codes (When Selection Criteria Are Met)

CPT Codes for Procedures Where 76937 and 76998 Are Covered (Central Venous Access)

Indication-Specific Covered Procedure Codes

The codes below are drawn directly from the CPB 0952 covered indications group. Coverage for each depends on the specific indication and patient criteria described in the policy. These are not generically covered — each requires documentation that the stated medical necessity criteria are met.

Codes Listed in Policy — Coverage Dependent on Specific Indication; Verify Against Full Policy

The codes below appear in CPB 0952 under a group that includes erector spinae plane (ESP) block, gluteal nerve injection, and related indications. As noted in the exclusions section above, ESP block and gluteal nerve injection are not supported for coverage under this policy. Other procedures in this group may carry additional criteria or restrictions not fully detailed here. Do not bill ultrasound guidance alongside these procedures without verifying the specific indication against CPB 0952 directly.

Not Covered CPT Codes