2027 ICD-10-CM Diagnosis Code N99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified

ICD-10-CM Codes›N00–N99›N99›N99

ICD-10-CM N99
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N99 is a non-billable ICD-10-CM category code for intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as N99.0, N99.110, N99.111, and N99.112.

Code Identity

ICD-10-CM Code
N99
Billable Status
No — Non-Billable Category
Code Describes
Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
Short Description
Intraop and postproc comp and disorders of GU sys, NEC
Chapter
N99
Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
CategoryN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
This CodeN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified

Specific Coding for Intraop and postproc comp and disorders of GU sys, NECOverview

Non-specific codes like N99 require more characters. Use one of these billable codes instead:

  • Use N99.0 for Postprocedural (acute) (chronic) kidney failure

  • N99.1 for Postprocedural urethral stricture

  • N99.11 for Postprocedural urethral stricture, male

  • Use N99.12 for Postprocedural urethral stricture, female

  • Use N99.2 for Postprocedural adhesions of vagina

  • Use N99.3 for Prolapse of vaginal vault after hysterectomy

  • Use N99.4 for Postprocedural pelvic peritoneal adhesions

  • N99.5 for Complications of stoma of urinary tract

  • N99.51 for Complication of cystostomy

  • N99.52 for Complication of incontinent external stoma of urinary tract

  • N99.53 for Complication of continent stoma of urinary tract

  • N99.6 for Intraoperative hemorrhage and hematoma of a genitourinary system organ or structure complicating a procedure

  • Use N99.61 for Intraoperative hemorrhage and hematoma of a genitourinary system organ or structure complicating a genitourinary system procedure

  • Use N99.62 for Intraoperative hemorrhage and hematoma of a genitourinary system organ or structure complicating other procedure

  • N99.7 for Accidental puncture and laceration of a genitourinary system organ or structure during a procedure

  • Use N99.71 for Accidental puncture and laceration of a genitourinary system organ or structure during a genitourinary system procedure

  • Use N99.72 for Accidental puncture and laceration of a genitourinary system organ or structure during other procedure

  • N99.8 for Other intraoperative and postprocedural complications and disorders of genitourinary system

  • Use N99.81 for Other intraoperative complications of genitourinary system

  • N99.82 for Postprocedural hemorrhage of a genitourinary system organ or structure following a procedure

  • Use N99.83 for Residual ovary syndrome

  • N99.84 for Postprocedural hematoma and seroma of a genitourinary system organ or structure following a procedure

  • Use N99.85 for Post endometrial ablation syndrome

  • N99.86 for Intraoperative and postprocedural complications and disorders of breast

  • Use N99.89 for Other postprocedural complications and disorders of genitourinary system

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N99: its own notes plus those printed at Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On N99 itself
  • irradiation cystitis (N30.4-)
  • postoophorectomy osteoporosis with current pathological fracture (M80.8-)
  • postoophorectomy osteoporosis without current pathological fracture (M81.8)
From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name N99, its category, or a range that includes it.

Excludes2 2

These codes carry an Excludes2 note naming N99: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block T80-T88 Complications of surgical and medical care, not elsewhere classified
    intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)
  • T81 Complications of procedures, not elsewhere classified
    intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N99Overview

Is N99 a billable code?

No. This is a category header that groups the codes for intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified, and headers cannot be submitted on claims. Claims for intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified need a more specific code from this category, such as N99.0, N99.110, and N99.111.