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2. ICD-10 Codes
3. Chapter - Z00-Z99
4. Section - Z00-Z13
5. Category - Z04
6. Z04.9

Z04.9 - Encounter for examination and observation for unspecified reason

• Applicable to Encounter for examination and observation for unspecified reason
• The 2025 edition of ICD10-CM Z04.9 became effective on October 1, 2024.
• This is the American ICD10-CM version of Z04.9 - other international versions of ICD10 Z04.9 may differ.
• Z04.9 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• Encounter for observation NOS

The following codes above Z04.9 contain annotation back-references that may be applicable to Z04.9:

• Chapter: Z00-Z99 - Factors influencing health status and contact with health services
• Section: Z00-Z13 - Persons encountering health services for examinations
• Category: Z04 - Encounter for examination and observation for other reasons

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.