Is N99.521 a billable ICD-10-CM code?

Yes. N99.521 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does N99.521 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).

N99.521

N99.521 — Infection of incontinent external stoma of urinary tract

Billable / specific codeICD-10-CM

N99.521 is a billable, specific ICD-10-CM code for infection of incontinent external stoma of urinary tract. It is valid for submission on a claim.

Risk adjustment

N99.521 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

N99.521 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 N99.521 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 N99.521.

Complication›stoma›urinary tract›infection
Complication›stoma›urinary tract›incontinent›infection

Related codes at this level

Codes that share N99.52. If N99.521 is not quite right, the correct code is usually one of these.

Questions about N99.521

Is N99.521 a billable ICD-10-CM code?: Yes. N99.521 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does N99.521 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).