ICD-10-CM 2027 diagnosis code
N99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
N99 is a header code, so it can't be reported by itself. Choose one of the 9 more specific codes beneath it.Short description: Intraop and postproc comp and disorders of GU sys, NEC
Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data
About N99
N99 is the ICD-10-CM diagnosis code for intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified. It belongs to block N99 (intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: N99.0 (failure), N99.1 (stricture), N99.2 (vagina), N99.3 (hysterectomy), N99.4 (adhesions), N99.5 (tract), N99.6 (procedure), N99.7 (procedure) and 1 more.
The conditions in its Excludes2 note aren't part of N99, but may be coded alongside it if the patient has both: irradiation cystitis (N30.4-), postoophorectomy osteoporosis with current pathological fracture (M80.8-) and postoophorectomy osteoporosis without current pathological fracture (M81.8).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under N99
- N99.0Postprocedural (acute) (chronic) kidney failureBillable
- N99.1Postprocedural urethral stricture
- N99.11Postprocedural urethral stricture, male
- N99.110Postprocedural urethral stricture, male, meatalBillable
- N99.111Postprocedural bulbous urethral stricture, maleBillable
- N99.112Postprocedural membranous urethral stricture, maleBillable
- N99.113Postprocedural anterior bulbous urethral stricture, maleBillable
- N99.114Postprocedural urethral stricture, male, unspecifiedBillable
- N99.115Postprocedural fossa navicularis urethral strictureBillable
- N99.116Postprocedural urethral stricture, male, overlapping sitesBillable
- N99.12Postprocedural urethral stricture, femaleBillable
- N99.11Postprocedural urethral stricture, male
- N99.2Postprocedural adhesions of vaginaBillable
- N99.3Prolapse of vaginal vault after hysterectomyBillable
- N99.4Postprocedural pelvic peritoneal adhesionsBillable
- N99.5Complications of stoma of urinary tract
- N99.51Complication of cystostomy
- N99.52Complication of incontinent external stoma of urinary tract
- N99.520Hemorrhage of incontinent external stoma of urinary tractBillable
- N99.521Infection of incontinent external stoma of urinary tractBillable
- N99.522Malfunction of incontinent external stoma of urinary tractBillable
- N99.523Herniation of incontinent stoma of urinary tractBillable
- N99.524Stenosis of incontinent stoma of urinary tractBillable
- N99.528Other complication of incontinent external stoma of urinary tractBillable
- N99.53Complication of continent stoma of urinary tract
- N99.530Hemorrhage of continent stoma of urinary tractBillable
- N99.531Infection of continent stoma of urinary tractBillable
- N99.532Malfunction of continent stoma of urinary tractBillable
- N99.533Herniation of continent stoma of urinary tractBillable
- N99.534Stenosis of continent stoma of urinary tractBillable
- N99.538Other complication of continent stoma of urinary tractBillable
- N99.6Intraoperative hemorrhage and hematoma of a genitourinary system organ or structure complicating a procedure
- N99.7Accidental puncture and laceration of a genitourinary system organ or structure during a procedure
- N99.8Other intraoperative and postprocedural complications and disorders of genitourinary system
- N99.81Other intraoperative complications of genitourinary systemBillable
- N99.82Postprocedural hemorrhage of a genitourinary system organ or structure following a procedure
- N99.83Residual ovary syndromeBillable
- N99.84Postprocedural hematoma and seroma of a genitourinary system organ or structure following a procedure
- N99.840Postprocedural hematoma of a genitourinary system organ or structure following a genitourinary system procedureBillable
- N99.841Postprocedural hematoma of a genitourinary system organ or structure following other procedureBillable
- N99.842Postprocedural seroma of a genitourinary system organ or structure following a genitourinary system procedureBillable
- N99.843Postprocedural seroma of a genitourinary system organ or structure following other procedureBillable
- N99.85Post endometrial ablation syndromeBillable
- N99.86Intraoperative and postprocedural complications and disorders of breast
- N99.89Other postprocedural complications and disorders of genitourinary systemBillable
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to N99.
Broader instructions also apply from Chapter 14: Diseases of the genitourinary system.
Codes whose notes reference N99
- T81Excludes2
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about N99
Is N99 billable?
- No. N99 is a header code. Report one of its more specific subcodes instead.