2026 ICD-10-CM Diagnosis Code A63.8Other specified predominantly sexually transmitted diseases

ICD-10-CM Codes›A00–B99›A50-A64›A63

ICD-10-CM A63.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A63.8 is a billable ICD-10-CM diagnosis code for other specified predominantly sexually transmitted diseases. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 727 through 728, 742 through 743, 757 through 759. Coders also document this condition as anaerobic balanitis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sexually transmitted infections (excluding HIV and hepatitis).

Code Identity

ICD-10-CM Code
A63.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified predominantly sexually transmitted diseases
Short Description
Other specified predominantly sexually transmitted diseases
Same as the full description in the CMS dataset.
Parent Code
A63
Other predominantly sexually transmitted diseases, not elsewhere classified

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA50-A64Infections with a predominantly sexual mode of transmission
CategoryA63Other predominantly sexually transmitted diseases, not elsewhere classified
This CodeA63.8Other specified predominantly sexually transmitted diseases

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Anaerobic balanitis
  • Bacterial balanitis
  • Ulcerative balanoposthitis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Balanoposthitis
      • ulcerative (specific)
    • Disease, diseased
      • sexually transmitted
        • specified organism NEC
    • Disease, diseased
      • venereal
        • specified nature or type NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF010
Sexually transmitted infections (excluding HIV and hepatitis)
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are infections that are passed from one person to another through sexual contact. If not treated, a STI can develop into a sexually transmitted disease (STD).

The full article covers:

  • What are sexually transmitted infections (STIs)?
  • What causes sexually transmitted infections (STIs)?
  • Who is affected by sexually transmitted infections (STIs)?
  • What are the symptoms of sexually transmitted infections (STIs)?
  • How are sexually transmitted infections (STIs) diagnosed?
  • What are the treatments for sexually transmitted infections (STIs)?
  • Can sexually transmitted infections (STIs) be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert A63.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
099.8 Venereal disease NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About A63.8Overview

Is A63.8 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified predominantly sexually transmitted diseases on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does A63.8 group to?

When other specified predominantly sexually transmitted diseases is the principal diagnosis on an inpatient stay, it groups to MS-DRG 727, 728, 742, 743, 757, 758, 759, with relative weights from 0.6636 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of A63.8?

Under the General Equivalence Mappings, other specified predominantly sexually transmitted diseases converts to ICD-9-CM 099.8 (venereal disease NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.