Skip to content
Dx

ICD-10-CM 2027

ICD-10 code for postoperative adhesions

K66.0

Peritoneal adhesions (postprocedural) (postinfection)

✓ Billable / specific

From the official ICD-10-CM alphabetic index entry “Adhesions, adhesive (postinfective) › postoperative (gastrointestinal tract)”. Page updated September 29, 2026.

About coding postoperative adhesions

The ICD-10-CM code for postoperative adhesions is K66.0 (Peritoneal adhesions (postprocedural) (postinfection)). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K66.0.

Within K66 (other disorders of peritoneum), K66.0 is specifically for peritoneal adhesions (postprocedural) (postinfection). Related codes cover Hemoperitoneum (K66.1), other specified disorders of peritoneum (K66.8) and disorder of peritoneum, unspecified (K66.9).

Don't report K66.0 together with the conditions in its Excludes1 note: peritoneal adhesions with intestinal obstruction (K56.5-).

The conditions in its Excludes2 note aren't part of K66.0, but may be coded alongside it if the patient has both: female pelvic adhesions [bands] (N73.6) and female pelvic postprocedural adhesions (N99.4).

More specific postoperative adhesions codes (official index)

  • with obstruction K91.30 — Postprocedural intestinal obstruction, unspecified as to partial versus complete
  • due to foreign body accidentally left in wound
  • pelvic peritoneal N99.4 — Postprocedural pelvic peritoneal adhesions
  • urethra
  • vagina N99.2 — Postprocedural adhesions of vagina

Don't confuse with (Excludes1 for K66.0)

  • peritoneal adhesions with intestinal obstruction (K56.5-)

Common questions about postoperative adhesions ICD-10 codes

What is the ICD-10 code for postoperative adhesions?

K66.0 — Peritoneal adhesions (postprocedural) (postinfection). More specific codes apply when the documentation supports them: K91.30, N99.4, N99.2.

What is the ICD-10 code for pelvic peritoneal postoperative adhesions?

N99.4 — Postprocedural pelvic peritoneal adhesions.

What is the ICD-10 code for vagina postoperative adhesions?

N99.2 — Postprocedural adhesions of vagina.

Is K66.0 billable?

Yes. K66.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can K66.0 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict K66.0 as a principal diagnosis.

Is K66.0 a CC or MCC?

No. K66.0 is neither a CC nor an MCC under MS-DRG v44.0.