ICD-10 K55
Non-Billable HeaderVascular disorders of intestine
About ICD-10-CM K55
ICD-10-CM code K55 represents Vascular disorders of intestine. This is a non-billable header code in the Digestive System chapter (block K55). The 2026 edition of ICD-10-CM K55 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 K55. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- necrotizing enterocolitis of newborn (P77.-)
Type 2 Excludes
Not included here, the excluded code is not part of K55, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- angioectasia (angiodysplasia) duodenum (K31.81-)
Medicare LCD Coverage for K55
Local Coverage Determinations (LCDs) from CMS MACs that list K55 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 K55.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but K55 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with K55
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 K55
Other codes in section K55-K64 (Other diseases of intestines).
ICD-10 K55, Billing FAQ
Is ICD-10 code K55 billable? +
No, K55 is a non-billable header code. Use a more specific child code from block K55 when submitting claims.
What codes are Type 1 Excludes for K55? +
Type 1 Excludes (never code together with K55): necrotizing enterocolitis of newborn (P77.-)
What codes are Type 2 Excludes for K55? +
Type 2 Excludes (may be coded together when both conditions exist): angioectasia (angiodysplasia) duodenum (K31.81-)
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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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