ICD-10-CM Code Z04.1

Encounter for examination and observation following transport accident

Version 2020 Billable Code

Valid for Submission

Z04.1 is a billable code used to specify a medical diagnosis of encounter for examination and observation following transport accident. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code Z04.1 might also be used to specify conditions or terms like accident - pressure in aircraft or accident due to sudden change in air pressure in aircraft.

ICD-10:Z04.1
Short Description:Encounter for exam and obs following transport accident
Long Description:Encounter for examination and observation following transport accident

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 Z04.1:

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • encounter for examination and observation following work accident Z04.2

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code Z04.1 are found in the index:


Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Accident - pressure in aircraft
  • Accident due to sudden change in air pressure in aircraft

Diagnostic Related Groups

The ICD-10 code Z04.1 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.

  • 922 - OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC
  • 923 - OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC

Convert Z04.1 to ICD-9

  • V71.4 - Observ-accident NEC (Approximate Flag)

Code Classification

  • Factors influencing health status and contact with health services (Z00–Z99)
    • Persons encountering health services for examinations (Z00-Z13)
      • Encounter for examination and observation for other reasons (Z04)

Code History

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