K38: Other diseases of appendix
Codes under K38 (Other diseases of appendix). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| K38.0 | Hyperplasia of appendix | ✓ |
| K38.0 | Hyperplasia of appendix | ✓ |
| K38.1 | Appendicular concretions | ✓ |
| K38.1 | Appendicular concretions | ✓ |
| K38.2 | Diverticulum of appendix | ✓ |
| K38.2 | Diverticulum of appendix | ✓ |
| K38.3 | Fistula of appendix | ✓ |
| K38.3 | Fistula of appendix | ✓ |
| K38.8 | Other specified diseases of appendix | ✓ |
| K38.8 | Other specified diseases of appendix | ✓ |
| K38.9 | Disease of appendix, unspecified | ✓ |
| K38.9 | Disease of appendix, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code K38?
K38 is an ICD-10-CM category covering Other diseases of appendix. It contains 12 more specific diagnosis codes, 12 of which are billable.
Is K38 a billable code?
No — K38 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example K38.0 — Hyperplasia of appendix). 12 of the 12 codes under K38 are billable.
What codes fall under K38?
K38 includes K38.0, K38.0, K38.1, K38.1, K38.2, plus 7 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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