Z22.7Latent tuberculosis
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Official Vietnamese name
- Người nhiễm lao tiềm ẩn
- Additional WHO coding guidance
- Excl.: abnormal result of Mantoux test (R76.1)
Related Z22 codes
Z22
Carrier of infectious disease
Z22.0
Primary diagnosis candidate
Carrier of typhoid
Z22.1
Primary diagnosis candidate
Carrier of other intestinal infectious diseases
Z22.2
Primary diagnosis candidate
Carrier of diphtheria
Z22.3
Primary diagnosis candidate
Carrier of other specified bacterial diseases
Z22.4
Primary diagnosis candidate
Carrier of infections with a predominantly sexual mode of transmission
Z22.6
Primary diagnosis candidate
Carrier of human T- lymphotropic virus type- 1 [HTLV-1] infection
Z22.8
Primary diagnosis candidate
Carrier of other infectious diseases
Z22.9
Primary diagnosis candidate
Carrier of infectious disease, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
