ICD-10-CM 2027
ICD-10 code for prostatitis
From the official ICD-10-CM alphabetic index entry “Prostatitis (congestive) (suppurative) (with cystitis)”. Page updated September 29, 2026.
About coding prostatitis
The ICD-10-CM code for prostatitis is N41.9 (Inflammatory disease of prostate, unspecified). The official index lists 12 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on N41.9.
Within N41, choose N41.9 (Inflammatory disease of prostate, unspecified) only when documentation doesn't support a more specific option: acute prostatitis (N41.0), chronic prostatitis (N41.1), abscess of prostate (N41.2), Prostatocystitis (N41.3), granulomatous prostatitis (N41.4) and other inflammatory diseases of prostate (N41.8).
Use an additional code (B95-B97), to identify infectious agent.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific prostatitis codes (official index)
- acute N41.0 — Acute prostatitis
- cavitary N41.8 — Other inflammatory diseases of prostate
- chronic N41.1 — Chronic prostatitis
- diverticular N41.8 — Other inflammatory diseases of prostate
- due to Trichomonas (vaginalis) A59.02 — Trichomonal prostatitis
- fibrous N41.1 — Chronic prostatitis
- gonococcal (acute) (chronic) A54.22 — Gonococcal prostatitis
- granulomatous N41.4 — Granulomatous prostatitis
- hypertrophic N41.1 — Chronic prostatitis
- subacute N41.1 — Chronic prostatitis
- trichomonal A59.02 — Trichomonal prostatitis
- tuberculous A18.14 — Tuberculosis of prostate
Common questions about prostatitis ICD-10 codes
What is the ICD-10 code for prostatitis?
- N41.9 — Inflammatory disease of prostate, unspecified. More specific codes apply when the documentation supports them: N41.0, N41.8, N41.1, N41.8 and others below.
What is the ICD-10 code for acute prostatitis?
- N41.0 — Acute prostatitis.
What is the ICD-10 code for cavitary prostatitis?
- N41.8 — Other inflammatory diseases of prostate.
What is the ICD-10 code for chronic prostatitis?
- N41.1 — Chronic prostatitis.
What is the ICD-10 code for diverticular prostatitis?
- N41.8 — Other inflammatory diseases of prostate.
What is the ICD-10 code for fibrous prostatitis?
- N41.1 — Chronic prostatitis.
What is the ICD-10 code for gonococcal prostatitis?
- A54.22 — Gonococcal prostatitis.
Is N41.9 billable?
- Yes. N41.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N41.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N41.9 as a principal diagnosis.
Is N41.9 a CC or MCC?
- No. N41.9 is neither a CC nor an MCC under MS-DRG v44.0.