ICD-10-CM 2027
ICD-10 code for prophylactic measures encounter
From the official ICD-10-CM alphabetic index entry “Encounter (with health service) (for) › prophylactic measures”. Page updated September 29, 2026.
About coding prophylactic measures encounter
The ICD-10-CM code for prophylactic measures encounter is Z29.9 (Encounter for prophylactic measures, unspecified). The official index lists 7 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Z29.9.
Within Z29, choose Z29.9 (prophylactic measures, unspecified) only when documentation doesn't support a more specific option: prophylactic immunotherapy (Z29.1), prophylactic fluoride administration (Z29.3) and other specified prophylactic measures (Z29.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific prophylactic measures encounter codes (official index)
- antivenin Z29.12 — Encounter for prophylactic antivenin
- fluoride administration Z29.3 — Encounter for prophylactic fluoride administration
- HIV pre-exposure Z29.81 — Encounter for HIV pre-exposure prophylaxis
- immunotherapy for respiratory syncytial virus (RSV) Z29.11 — Encounter for prophylactic immunotherapy for respiratory syncytial virus (RSV)
- rabies immune globin Z29.14 — Encounter for prophylactic rabies immune globulin
- Rho (D) immune globulin Z29.13 — Encounter for prophylactic Rho(D) immune globulin
- specified NEC Z29.89 — Encounter for other specified prophylactic measures
Common questions about prophylactic measures encounter ICD-10 codes
What is the ICD-10 code for prophylactic measures encounter?
- Z29.9 — Encounter for prophylactic measures, unspecified. More specific codes apply when the documentation supports them: Z29.12, Z29.3, Z29.81, Z29.11 and others below.
What is the ICD-10 code for antivenin prophylactic measures encounter?
- Z29.12 — Encounter for prophylactic antivenin.
What is the ICD-10 code for fluoride administration prophylactic measures encounter?
- Z29.3 — Encounter for prophylactic fluoride administration.
What is the ICD-10 code for hiv pre-exposure prophylactic measures encounter?
- Z29.81 — Encounter for HIV pre-exposure prophylaxis.
What is the ICD-10 code for rabies immune globin prophylactic measures encounter?
- Z29.14 — Encounter for prophylactic rabies immune globulin.
What is the ICD-10 code for rho immune globulin prophylactic measures encounter?
- Z29.13 — Encounter for prophylactic Rho(D) immune globulin.
Is Z29.9 billable?
- Yes. Z29.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z29.9 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z29.9 a CC or MCC?
- No. Z29.9 is neither a CC nor an MCC under MS-DRG v44.0.