ICD-10 K57
Non-Billable HeaderDiverticular disease of intestine
About ICD-10-CM K57
ICD-10-CM code K57 represents Diverticular disease of intestine. This is a non-billable header code in the Digestive System chapter (block K57). The 2026 edition of ICD-10-CM K57 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 K57. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- congenital diverticulum of intestine (Q43.8)
- Meckel's diverticulum (Q43.0)
Type 2 Excludes
Not included here, the excluded code is not part of K57, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- diverticulum of appendix (K38.2)
Coding Notes
Code Also
- if applicable peritonitis K65.-
Medicare LCD Coverage for K57
Local Coverage Determinations (LCDs) from CMS MACs that list K57 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 K57.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but K57 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with K57
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 K57
Other codes in section K55-K64 (Other diseases of intestines).
ICD-10 K57, Billing FAQ
Is ICD-10 code K57 billable? +
No, K57 is a non-billable header code. Use a more specific child code from block K57 when submitting claims.
What codes are Type 1 Excludes for K57? +
Type 1 Excludes (never code together with K57): congenital diverticulum of intestine (Q43.8); Meckel's diverticulum (Q43.0)
What codes are Type 2 Excludes for K57? +
Type 2 Excludes (may be coded together when both conditions exist): diverticulum of appendix (K38.2)
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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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