ICD-10 K38.1
Billable / SpecificAppendicular concretions
About ICD-10-CM K38.1
ICD-10-CM code K38.1 represents Appendicular concretions. This is a billable/specific code in the Digestive System chapter (block K38). The 2026 edition of ICD-10-CM K38.1 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under K38.1. Per CMS ICD-10-CM Tabular 2026.
- Fecalith of appendix
- Stercolith of appendix
Medicare LCD Coverage for K38.1
Local Coverage Determinations (LCDs) from CMS MACs that list K38.1 as a covered diagnosis.
Showing top 10 of 107 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing K38.1.
3 Medicare
CPT Codes Commonly Billed with K38.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Convert K38.1 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 |
|---|---|---|
| K38.1 | 5439 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To K38.1
Other codes in section K35-K38 (Diseases of appendix).
ICD-10 K38.1, Billing FAQ
Is ICD-10 code K38.1 billable? +
Yes, K38.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to K38.1? +
ICD-10 K38.1 includes: Fecalith of appendix; Stercolith of appendix.
What CPT codes are commonly billed with K38.1? +
Procedures frequently paired with K38.1 include: 44970, 44950.
What ICD-9 codes does K38.1 map to? +
Per CMS GEMs, K38.1 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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