N99.522 — Malfunction of incontinent external stoma of urinary tract
N99.522 is a billable, specific ICD-10-CM code for malfunction of incontinent external stoma of urinary tract. It is valid for submission on a claim.
Excludes2 inherited from the categories above N99.522
Also inherited, and the opposite of Excludes1: these conditions are not part of N99.522, but a patient can have both, so you may code both.
Written on N99.5 — Complications of stoma of urinary tract
- mechanical complication of urinary catheter (T83.0-)
Written on N99 — Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
Risk adjustment
N99.522 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
N99.522 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
How N99.522 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to N99.522.
- Complication›stoma›urinary tract›malfunction
- Complication›stoma›urinary tract›incontinent›malfunction
Code history
N99.522 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share N99.52. If N99.522 is not quite right, the correct code is usually one of these.
- N99.520Hemorrhage of incontinent external stoma of urinary tract
- N99.521Infection of incontinent external stoma of urinary tract
- N99.523Herniation of incontinent stoma of urinary tract
- N99.524Stenosis of incontinent stoma of urinary tract
- N99.528Other complication of incontinent external stoma of urinary tract
Questions about N99.522
- Is N99.522 a billable ICD-10-CM code?
- Yes. N99.522 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does N99.522 sit in the tabular list?
- Diseases of the genitourinary system (N00-N99), in the block Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified (N99).