2021 ICD-10-CM Code Z04.8

Encounter for examination and observation for other specified reasons

Version 2021
Replaced Code
Non-Billable Code

Not Valid for Submission

Z04.8 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of encounter for examination and observation for other specified reasons. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

ICD-10:Z04.8
Short Description:Encounter for examination and observation for oth reasons
Long Description:Encounter for examination and observation for other specified reasons

Code Classification

Specific Coding for Encounter for examination and observation for oth reasons

Header codes like Z04.8 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for encounter for examination and observation for oth reasons:

  • Z04.81 - Encounter for examination and observation of victim following forced sexual exploitation
  • Z04.82 - Encounter for examination and observation of victim following forced labor exploitation
  • Z04.89 - Encounter for examination and observation for other specified reasons

Replaced Code

This code was replaced in the 2021 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2020. This code was replaced for the FY 2021 (October 1, 2020 - September 30, 2021).


  • Z04.81 - Enctr for exam and obs of victim fol forced sex exploitation
  • Z04.81 - Enctr for exam and obs of victim fol forced sex exploitation
  • Z04.82 - Enctr for exam and obs of vctm fol forced labor exploitation
  • Z04.82 - Enctr for exam and obs of vctm fol forced labor exploitation
  • Z04.89 - Encounter for examination and observation for oth reasons
  • Z04.89 - Encounter for examination and observation for oth reasons

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code Z04.8:


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

Convert Z04.8 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code Z04.8 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


Health Screening

Also called: Screening tests

Screenings are tests that look for diseases before you have symptoms. Screening tests can find diseases early, when they're easier to treat. You can get some screenings in your doctor's office. Others need special equipment, so you may need to go to a different office or clinic.

Some conditions that doctors commonly screen for include

Which tests you need depends on your age, your sex, your family history, and whether you have risk factors for certain diseases. After a screening test, ask when you will get the results and whom to talk to about them.

Agency for Healthcare Research and Quality


[Learn More]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)