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ICD-10-CM 2027 diagnosis code

A59.02Trichomonal prostatitis

✓ Billable / specificMale only

A59.02 is a valid, billable ICD-10-CM code for trichomonal prostatitis. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About A59.02

A59.02 is the ICD-10-CM diagnosis code for Trichomonal prostatitis. It belongs to category A59 (trichomoniasis), block A50-A64 (infections with a predominantly sexual mode of transmission) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within A59.0 (urogenital trichomoniasis), A59.02 is specifically for Trichomonal prostatitis. Related codes cover unspecified (A59.00), Trichomonal vulvovaginitis (A59.01), Trichomonal cystitis and urethritis (A59.03) and other urogenital trichomoniasis (A59.09).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 727 (Inflammation of the Male Reproductive System with MCC, relative weight 1.37) and DRG 728 (Inflammation of the Male Reproductive System without MCC, relative weight 0.8224), in MDC 12 (Diseases and Disorders of the Male Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is on the CMS list of diagnoses consistent only with male patients (the sex-conflict edit itself was retired in FY2025).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 131.03 (Trichomonal prostatitis).

Notes that apply from higher levels

Instructions written at a parent level also apply to A59.02.

› From A59 Trichomoniasis
Excludes2
  • intestinal trichomoniasis (A07.8)

Broader instructions also apply from A50-A64 Infections with a predominantly sexual mode of transmission and Chapter 1: Certain infectious and parasitic diseases.

Alphabetic index entries

4 entries

Terms in the official ICD-10-CM index that lead to A59.02.

Codes whose notes reference A59.02

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 131.03Trichomonal prostatitisexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about A59.02

Is A59.02 billable?

Yes. A59.02 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can A59.02 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict A59.02 as a principal diagnosis.

Is A59.02 a CC or MCC?

No. A59.02 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does A59.02 group to?

A59.02 is used in the MS-DRG v44.0 logic for MS-DRG 727 (Inflammation of the Male Reproductive System with MCC) and MS-DRG 728 (Inflammation of the Male Reproductive System without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for A59.02?

The CMS General Equivalence Mappings map A59.02 to ICD-9-CM 131.03.