Z22.7 — Latent tuberculosis

Z22.7

ICD-10 Chapter 21: Factors Influencing Health Status — illustrative image — Chapter 21: Factors influencing health status and contact with health services (Z00–Z99) — illustrative image

What this code means

Latent tuberculosis infection means the TB bacteria are present but inactive, with no illness; found by a skin or blood test.

Also called: latent tuberculosis, ltbi, latent tb.

When this code is used

Used for latent tuberculosis.

Where it sits in ICD-10-CM

Code Z22.7 belongs to Chapter 21: Factors influencing health status and contact with health services, which covers codes Z00–Z99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Frequently asked questions

What is ICD-10-CM code Z22.7?

Z22.7 is the ICD-10-CM diagnosis code for “Latent tuberculosis”. Latent tuberculosis infection means the TB bacteria are present but inactive, with no illness; found by a skin or blood test.

When is code Z22.7 used?

Used for latent tuberculosis. It belongs to Chapter 21 of ICD-10-CM (Factors influencing health status and contact with health services).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.