ICD-10 K38.9
Billable / SpecificDisease of appendix, unspecified
About ICD-10-CM K38.9
ICD-10-CM code K38.9 represents Disease of appendix, unspecified. This is a billable/specific code in the Digestive System chapter (block K38). The 2026 edition of ICD-10-CM K38.9 became effective on October 1, 2025.
Medicare LCD Coverage for K38.9
Local Coverage Determinations (LCDs) from CMS MACs that list K38.9 as a covered diagnosis.
Showing top 10 of 60 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing K38.9.
2 Medicare
CPT Codes Commonly Billed with K38.9
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 K38.9 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 |
|---|---|---|
| K38.9 | 5439 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To K38.9
Other codes in section K35-K38 (Diseases of appendix).
ICD-10 K38.9, Billing FAQ
Is ICD-10 code K38.9 billable? +
Yes, K38.9 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What ICD-9 codes does K38.9 map to? +
Per CMS GEMs, K38.9 maps to ICD-9 codes: 5439. 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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