Z04.9

✓ Billable

Encounter for examination and observation for unspecified reason

Factors influencing health status and contact with health services (Z00-Z99)

Also Known As

Encounter for observation NOS

✅ No additional coding notes for Z04.9

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Code Information

CodeZ04.9

BillableYes

ParentZ04

CategoryFactors influencing health status and contact with health services (Z00-Z99)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)