All ICD10 Codes

K66

Non-Billable
ChapterK00–K95
Rankcategory
Official Description

Other disorders of peritoneum

Use a more specific code (4 billable)
K66.0Peritoneal adhesions (postprocedural) (postinfection)K66.1HemoperitoneumK66.8Other specified disorders of peritoneumK66.9Disorder of peritoneum, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 11: Diseases of the Digestive System (K00-K95).

CH11 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)
  • ascites (R18.-)
  • peritoneal effusion (chronic) (R18.8)

Clinical Hierarchy

BillableHas subcodes
CH11Diseases of the digestive system (K00-K95)
K65-K68Diseases of peritoneum and retroperitoneum (K65-K68)
K66Other disorders of peritoneumNot billable
K66.0Peritoneal adhesions (postprocedural) (postinfection)Billable
K66.1HemoperitoneumBillable
K66.8Other specified disorders of peritoneumBillable
K66.9Disorder of peritoneum, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K66:

chapterCH11
Diseases of the digestive system (K00-K95)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Other disorders of peritoneum.

Search PCS Codes