A63

Non-billable

Other predominantly sexually transmitted diseases, not elsewhere classified

A63 is the ICD-10-CM code for Other predominantly sexually transmitted diseases, not elsewhere classified. It is a non-billable category code — use a more specific child code such as A63.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
2
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

What are sexually transmitted infections (STIs)? 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). STIs are usually spread during vaginal, oral, or anal sex. But sometimes they can spread through other sexual contact involving the penis, vagina, mouth, or anus. This is…

Read more about Sexually Transmitted Infections at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes2 — not included here

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

Frequently asked questions

What is ICD-10 code A63?
A63 is the ICD-10-CM code for "Other predominantly sexually transmitted diseases, not elsewhere classified". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A63 a billable code?
No — A63 is a non-billable header code. Use a more specific child code (such as A63.0) for billing.
What are the subcodes of A63?
A63 has 2 more specific child codes, including A63.0, A63.8.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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