Evaluation of Sinusitis — CPB 0694 | AETNA Coverage Update

TL;DR: Aetna, a CVS Health company, modified CPB 0694 governing sinusitis evaluation, effective January 5, 2026. The update expands the list of tests and procedures Aetna considers experimental — including CPT 95012 and HCPCS S9024 — and your billing team needs to know which sinusitis workup codes will now trigger automatic denials.

If your practice bills for ENT, allergy, or pulmonology and sees Aetna-covered sinusitis patients, this Aetna sinusitis coverage policy change directly affects your reimbursement on diagnostic workups. CPB 0694 Aetna is the clinical policy bulletin governing how sinusitis evaluations get covered — and this January 2026 update draws a sharper line between billable diagnostics and tests that will get denied on sight.

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Quick-Reference Table

Field	Detail Copy
Payer	Aetna, a CVS Health company
Policy	Evaluation of Sinusitis — CPB 0694
Policy Code	CPB 0694
Change Type	Modified
Effective Date	January 5, 2026
Impact Level	Medium — affects diagnostic billing for CRS workups
Specialties Affected	ENT/Otolaryngology, Allergy & Immunology, Pulmonology, Primary Care
Key Action	Audit charge capture for CPT 95012 and HCPCS S9024 and remove from CRS diagnostic order sets for Aetna patients

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Aetna Sinusitis Evaluation Coverage Criteria and Medical Necessity Requirements 2026

The real issue with CPB 0694 is what it does not cover. This policy is almost entirely a denial framework. Aetna's coverage policy for sinusitis evaluation doesn't lay out a list of approved tests — it lays out a growing list of tests your team should stop ordering if you expect reimbursement.

Aetna does not define specific medical necessity criteria for covered sinusitis diagnostics within this bulletin. The policy's function is to identify which emerging and biomarker-based tests fall outside covered care. If your sinusitis billing relies on standard clinical evaluation — history, physical exam, imaging through appropriate channels — this policy doesn't change that. What it does change is the treatment of a specific set of diagnostic tests that some practices have been billing and some physicians have been ordering.

Prior authorization requirements for sinusitis-related procedures are not explicitly addressed in this bulletin. Generally, Aetna's experimental designation indicates non-coverage regardless of authorization — but confirm prior authorization requirements directly with Aetna before assuming that's the case for your specific patient mix. Don't waste your team's time seeking prior authorization for CPT 95012 or HCPCS S9024 for Aetna patients with a sinusitis diagnosis without first verifying Aetna's current prior auth guidance.

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Aetna Sinusitis Evaluation Exclusions and Non-Covered Indications

This is the section that does the most work for your billing team. Aetna now explicitly classifies the following tests as experimental, investigational, or unproven for sinusitis evaluation. Each item on this list is a potential claim denial waiting to happen.

IgG4-positive plasma cell detection in the nasal cavity or paranasal sinuses for chronic rhinosinusitis (CRS) diagnosis is non-covered. This is a pathology-level test showing up in some academic CRS workups — if your affiliated pathology lab is billing this on shared Aetna claims, that's exposure.

Tissue eosinophilia examination gets a double exclusion. Aetna excludes it both for predicting disease severity in CRS patients and for evaluating CRS-associated olfactory loss. Two separate clinical questions, same denial outcome.

Tissue EGFR ligands and matrix metalloproteinases — including epiregulin — for CRS evaluation are excluded. This is a research-adjacent test that occasionally appears in tertiary ENT workups.

Nasal nitric oxide measurement — billed as CPT 95012 — is explicitly named. This is the code most likely to generate a surprise denial for ENT and pulmonology practices. CPT 95012 is the nitric oxide expired gas determination code, and Aetna's coverage policy now explicitly excludes it when used for eosinophilic chronic rhinosinusitis diagnosis.

Microarray DNA testing for CRS evaluation is excluded. If your genomics or molecular lab is running these panels with a sinusitis ICD-10 code, expect denials.

Type 2 cytokines as biomarkers — including IL-4, IL-5, and IL-13 — are excluded for CRS evaluation. This is relevant for practices billing immunology panels alongside CRS diagnoses.

Paranasal sinus ultrasound — billed as HCPCS S9024 or, in some cases, attempted under CPT 76536 — is explicitly excluded. S9024 is listed as not covered for the indications in this CPB. CPT 76536 (ultrasound of soft tissues of the head and neck) also appears in the experimental grouping. Don't try to recode S9024 as 76536 to get around the exclusion — both codes are in the non-covered bucket for this policy.

TAS2R38 genotyping for CRS surgical outcomes is excluded. This is a niche genetic test tied to bitter taste receptor research in CRS. It's uncommon in community practice but worth flagging for academic ENT centers.

Taste receptor testing in CRS is excluded.

Periostin as a biomarker — both tissue and serum levels — for CRS is excluded. Periostin testing is gaining traction in type 2 inflammatory workups. If your allergists are ordering periostin panels and billing them against CRS diagnosis codes, this policy creates direct denial risk.

The pattern here is clear: Aetna is drawing a hard line between standard clinical sinusitis evaluation and biomarker-driven, research-adjacent CRS workups. If a test tries to characterize the inflammatory phenotype of CRS rather than simply confirm its presence, Aetna won't pay for it.

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Coverage Indications at a Glance

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Aetna Sinusitis Billing Guidelines and Action Items 2026

This is where CPB 0694 becomes a revenue protection problem. The effective date is January 5, 2026 — which means claims for any of these excluded tests with dates of service on or after that date are denial candidates.

Copy Action Items

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CPT, HCPCS, and ICD-10 Codes for Sinusitis Evaluation Under CPB 0694

Not Covered / Experimental CPT Codes

Code	Type	Description	Reason Copy
95012	CPT	Nitric oxide expired gas determination (nasal nitric oxide measurement)	Experimental — excluded for eosinophilic CRS diagnosis
76536	CPT	Ultrasound, soft tissues of head and neck (e.g., thyroid, parathyroid, parotid), real time with imaging	Experimental — grouped with non-covered sinusitis diagnostics including type 2 cytokines and microarray DNA testing

Not Covered / Experimental HCPCS Codes

Code	Type	Description	Reason Copy
S9024	HCPCS	Paranasal sinus ultrasound	Not covered for indications listed in CPB 0694

Key ICD-10-CM Diagnosis Codes — Sinusitis

These codes represent the sinusitis diagnoses under the scope of CPB 0694. Claims pairing excluded CPT or HCPCS codes with these ICD-10 codes are the primary denial risk.

The full ICD-10-CM code set under CPB 0694 includes 103 codes spanning acute and chronic sinusitis subcategories. Review the full list at the Aetna CPB 0694 source policy.

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