ICD-10 Q85.8
Non-Billable HeaderOther phakomatoses, not elsewhere classified
About ICD-10-CM Q85.8
ICD-10-CM code Q85.8 represents Other phakomatoses, not elsewhere classified. This is a non-billable header code in the Congenital Malformations chapter (block Q85). The 2026 edition of ICD-10-CM Q85.8 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with Q85.8. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- Meckel-Gruber syndrome (Q61.9)
Medicare LCD Coverage for Q85.8
Local Coverage Determinations (LCDs) from CMS MACs that list Q85.8 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing Q85.8.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but Q85.8 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with Q85.8
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert Q85.8 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| Q85.8 | 7596 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To Q85.8
Other codes in section Q80-Q89 (Other congenital malformations).
ICD-10 Q85.8, Billing FAQ
Is ICD-10 code Q85.8 billable? +
No, Q85.8 is a non-billable header code. Use a more specific child code from block Q85 when submitting claims.
What codes are Type 1 Excludes for Q85.8? +
Type 1 Excludes (never code together with Q85.8): Meckel-Gruber syndrome (Q61.9)
What ICD-9 codes does Q85.8 map to? +
Per CMS GEMs, Q85.8 maps to ICD-9 codes: 7596. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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