N51 — Disorders of male genital organs in diseases classified elsewhere
N51 is a billable, specific ICD-10-CM code for disorders of male genital organs in diseases classified elsewhere. It is valid for submission on a claim.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Code first
The underlying condition must be sequenced before this code.
Risk adjustment
N51 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
N51 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56697Billing and Coding: Non-Invasive Vascular Studies
- A56758Billing and Coding: Non-Invasive Vascular Studies
- A57591Billing and Coding: Non-Invasive Abdominal / Visceral Vascular Studies
Code history
N51 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Questions about N51
- Is N51 a billable ICD-10-CM code?
- Yes. N51 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does N51 sit in the tabular list?
- Diseases of the genitourinary system (N00-N99), in the block Diseases of male genital organs (N40-N53).
- What cannot be coded together with N51?
- N51 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.