2026 ICD-10-CM Diagnosis Code A63Other predominantly sexually transmitted diseases, not elsewhere classified

ICD-10-CM Codes›A00–B99›A50-A64›A63

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

A63 is a non-billable ICD-10-CM category code for other predominantly sexually transmitted diseases, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A63.0 and A63.8.

Code Identity

ICD-10-CM Code
A63
Billable Status
No — Non-Billable Category
Code Describes
Other predominantly sexually transmitted diseases, not elsewhere classified
Chapter
A50-A64
Infections with a predominantly sexual mode of transmission

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 CodeA63Other predominantly sexually transmitted diseases, not elsewhere classified

Specific Coding for Oth predominantly sexually transmitted diseases, NECOverview

Non-specific codes like A63 require more characters. Use one of these billable codes instead:

  • Use A63.0 for Anogenital (venereal) warts

  • Use A63.8 for Other specified predominantly sexually transmitted diseases

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 2 Excludes

  • molluscum contagiosum B08.1
  • papilloma of cervix D26.0

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.

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 A63Overview

Is A63 a billable code?

No. This is a category header that groups the codes for other predominantly sexually transmitted diseases, not elsewhere classified, and headers cannot be submitted on claims. Claims for other predominantly sexually transmitted diseases, not elsewhere classified need a more specific code from this category, such as A63.0 and A63.8.