ICD-10 I15
Non-Billable HeaderSecondary hypertension
About ICD-10-CM I15
ICD-10-CM code I15 represents Secondary hypertension. This is a non-billable header code in the Circulatory System chapter (block I15). The 2026 edition of ICD-10-CM I15 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 I15. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- postprocedural hypertension (I97.3)
Type 2 Excludes
Not included here, the excluded code is not part of I15, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- secondary hypertension involving vessels of brain (I60-I69)
- secondary hypertension involving vessels of eye (H35.0-)
Coding Notes
Code Also
- underlying condition
Medicare LCD Coverage for I15
Local Coverage Determinations (LCDs) from CMS MACs that list I15 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 I15.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but I15 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with I15
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.
Codes Adjacent To I15
Other codes in section I10-I1A (Hypertensive diseases).
ICD-10 I15, Billing FAQ
Is ICD-10 code I15 billable? +
No, I15 is a non-billable header code. Use a more specific child code from block I15 when submitting claims.
What codes are Type 1 Excludes for I15? +
Type 1 Excludes (never code together with I15): postprocedural hypertension (I97.3)
What codes are Type 2 Excludes for I15? +
Type 2 Excludes (may be coded together when both conditions exist): secondary hypertension involving vessels of brain (I60-I69); secondary hypertension involving vessels of eye (H35.0-)
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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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