A59

Non-Billable

ChapterA00–B99

Rankcategory

Official Description

Trichomoniasis

Use a more specific code (2 billable, 1 non-billable)

A59.0Urogenital trichomoniasishas subcodes A59.8Trichomoniasis of other sites A59.9Trichomoniasis, unspecified

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes

diseases generally recognized as communicable or transmissible

Excludes1(Not coded here. Use a different code.)

certain localized infections - see body system-related chapters

Excludes2(Not included here. Code separately if applicable.)

carrier or suspected carrier of infectious disease (Z22.-)
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
infectious and parasitic diseases specific to the perinatal period (P35-P39)
influenza and other acute respiratory infections (J00-J22)

Use Additional Code

code to identify resistance to antimicrobial drugs (Z16.-)

A50-A64 Parent Instructions

Excludes1(Not coded here. Use a different code.)

nonspecific and nongonococcal urethritis (N34.1)
Reiter's disease (M02.3-)

Excludes2(Not included here. Code separately if applicable.)

human immunodeficiency virus [HIV] disease (B20)

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)

intestinal trichomoniasis (A07.8)

Clinical Hierarchy

BillableHas subcodes

CH1Certain infectious and parasitic diseases (A00-B99)

A50-A64Infections with a predominantly sexual mode of transmission (A50-A64)

A59TrichomoniasisNot billable

A59.0Urogenital trichomoniasisSubcodes

A59.8Trichomoniasis of other sitesBillable

A59.9Trichomoniasis, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A59:

blockA50-A64

Infections with a predominantly sexual mode of transmission (A50-A64)

View context instructions

chapterCH1

Certain infectious and parasitic diseases (A00-B99)

View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Trichomoniasis.

Search PCS Codes