K66.0 vs N99.4
K66.0 (Peritoneal adhesions (postprocedural) (postinfection)) compared with N99.4 (Postprocedural pelvic peritoneal adhesions), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. K66.0 carries an Excludes2 note covering N99.4: “female pelvic postprocedural adhesions (N99.4)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| K66.0Peritoneal adhesions (postprocedural) (postinfection) | N99.4Postprocedural pelvic peritoneal adhesions | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | N00-N99 — Diseases of the Genitourinary System (N00-N99) |
| Definition | Peritoneal adhesions (postprocedural) (postinfection) is a billable ICD-10-CM diagnosis code (K66.0). | Postprocedural pelvic peritoneal adhesions is a billable ICD-10-CM diagnosis code (N99.4). |
| Includes | Adhesions (of) abdominal (wall) Adhesions (of) diaphragm Adhesions (of) intestine Adhesions (of) male pelvis | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources