N99.4 Postprocedural pelvic peritoneal adhesions
The ICD-10-CM code for Postprocedural pelvic peritoneal adhesions is N99.4 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- N99: Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified (N99)
- Category N99
- 54 codes (42 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to N99.4:
- Adhesions, adhesive (postinfective) › postoperative (gastrointestinal tract) › pelvic peritoneal
- Adhesions, adhesive (postinfective) › peritoneum, peritoneal (postinfective) › pelvic, female › postprocedural
- Complication (s) (from) (of) › genitourinary › postprocedural › pelvic peritoneal adhesions
- Adhesions, adhesive (postinfective) › pelvic (peritoneal) › female › postprocedural
U.S. Hospital Utilization
- An estimated 2,620 U.S. inpatient stays in 2023 included N99.4 among the documented diagnoses.
- 80 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
CKD staging and code assignment (N18.-)The ICD-10-CM classifies CKD based on severity. The severity of CKD is designated by stages 1-5. Stage 2, code N18.2, equates to mild CKD; stage 3, codes N18.30-N18.32, equate to moderate CKD; and stage 4, code N18.4, equates to severe CKD. Code N18.6, End stage renal disease (ESRD), is assigned when the provider has documented end- stage renal disease (ESRD).
CKD stage plus ESRD: assign N18.6 onlyIf both a stage of CKD and ESRD are documented, assign code N18.6 only.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026