Z04.1 Encounter for examination and observation following transport accident

Billable ICD-10-CM code, FY2026.

Excludes1 (never code together)

• encounter for examination and observation following work accident (Z04.2)

Applies from Z04 Encounter for examination and observation for other reasons

Includes

• encounter for examination for medicolegal reasons
• This category is to be used when a person without a diagnosis is suspected of having an abnormal condition, without signs or symptoms, which requires study, but after examination and observation, is ruled-out. This category is also for use for administrative and legal observation status.

MS-DRG index

Defines the logic of DRG(s) 922-923 in MDC 21.

Approximate ICD-9-CM (GEMs)

• V71.4 Observation following other accident (approximate)

Diagnosis Index entries for Z04.1

• Examination (for) (following) (general) (of) (routine) › following › accident NEC › transport
• Examination (for) (following) (general) (of) (routine) › following › motor vehicle accident
• Observation (following) (for) (without need for further medical care) › accident NEC › transport

Nearby codes

• Z04 Encounter for examination and observation for other reasons
• Z04.1 Encounter for examination and observation following transport accident (this code)
• Z04.2 Encounter for examination and observation following work accident
• Z04.3 Encounter for examination and observation following other accident
• Z04.4 Encounter for examination and observation following alleged rape
• Z04.41 Encounter for examination and observation following alleged adult rape
• Z04.42 Encounter for examination and observation following alleged child rape