Convert ICD-10 Z23 to ICD-9

ICD-10 code Z23, Encounter for immunization, crosswalked to ICD-9 with the official CMS General Equivalence Mappings. Convert another code below.

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Official CMS General Equivalence Mappings Final GEMs release (FY 2018) Maps in both directions

1 ICD-9 mapping for ICD-10 Z23

From the official CMS General Equivalence Mappings. Review each mapping's flags before selecting the final code. Convert another code

ICD-10 code Z23, "Encounter for immunization", maps to ICD-9 code V05.9, "Vaccin for singl dis NOS". The mapping is flagged approximate: it is the closest available equivalent, not an exact match, so review the clinical documentation when selecting the final code. The crosswalk comes from the official CMS General Equivalence Mappings.

ICD‑10 Code

Z23

Encounter for immunization

ICD‑9 Code

V05.9

Vaccin for singl dis NOS

Approximate Flag – This ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option and may not fully capture the original diagnosis.

See everything about the source code, including its category, synonyms, and history: open the Z23 code page → Or run the reverse crosswalk: convert V05.9 back to ICD-10 →