K66: Other disorders of peritoneum
Codes under K66 (Other disorders of peritoneum). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| K66.0 | Peritoneal adhesions (postprocedural) (postinfection) | ✓ |
| K66.0 | Peritoneal adhesions (postprocedural) (postinfection) | ✓ |
| K66.1 | Hemoperitoneum | ✓ |
| K66.1 | Hemoperitoneum | ✓ |
| K66.8 | Other specified disorders of peritoneum | ✓ |
| K66.8 | Other specified disorders of peritoneum | ✓ |
| K66.9 | Disorder of peritoneum, unspecified | ✓ |
| K66.9 | Disorder of peritoneum, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code K66?
K66 is an ICD-10-CM category covering Other disorders of peritoneum. It contains 8 more specific diagnosis codes, 8 of which are billable.
Is K66 a billable code?
No — K66 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 K66.0 — Peritoneal adhesions (postprocedural) (postinfection)). 8 of the 8 codes under K66 are billable.
What codes fall under K66?
K66 includes K66.0, K66.0, K66.1, K66.1, K66.8, plus 3 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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