ICD-10 I20.8
Non-Billable HeaderOther forms of angina pectoris
About ICD-10-CM I20.8
ICD-10-CM code I20.8 represents Other forms of angina pectoris. This is a non-billable header code in the Circulatory System chapter (block I20). The 2026 edition of ICD-10-CM I20.8 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.
Use Additional Code
When coding I20.8, also report these additional codes when applicable.
- code(s) for symptoms associated with angina equivalent
Medicare LCD Coverage for I20.8
Local Coverage Determinations (LCDs) from CMS MACs that list I20.8 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 I20.8.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but I20.8 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with I20.8
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 I20.8 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 |
|---|---|---|
| I20.8 | 4139 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I20.8
Other codes in section I20-I25 (Ischemic heart diseases).
ICD-10 I20.8, Billing FAQ
Is ICD-10 code I20.8 billable? +
No, I20.8 is a non-billable header code. Use a more specific child code from block I20 when submitting claims.
What ICD-9 codes does I20.8 map to? +
Per CMS GEMs, I20.8 maps to ICD-9 codes: 4139. 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 May 31, 2026.
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