ICD-10 I1A
Non-Billable HeaderOther hypertension
About ICD-10-CM I1A
ICD-10-CM code I1A represents Other hypertension. This is a non-billable header code in the Circulatory System chapter (block I1A). The 2026 edition of ICD-10-CM I1A 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.
Medicare LCD Coverage for I1A
Local Coverage Determinations (LCDs) from CMS MACs that list I1A 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 I1A.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but I1A doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with I1A
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 I1A
Other codes in section I10-I1A (Hypertensive diseases).
ICD-10 I1A, Billing FAQ
Is ICD-10 code I1A billable? +
No, I1A is a non-billable header code. Use a more specific child code from block I1A when submitting claims.
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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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