Z04.3 — Encounter for examination and observation following other accident

Billable

Is Z04.3 billable?

Yes — Z04.3 is billable for FY2027. Z04.3 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z04.3 may be submitted for encounters from October 1, 2026 through September 30, 2027.

Z04.3 at a glance

Code	Z04.3
Description	Encounter for examination and observation following other accident
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does Z04.3 group to?

Z04.3 sits in MDC 21 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

922Other Injury, Poisoning and Toxic Effect Diagnoses with MCCmedical
923Other Injury, Poisoning and Toxic Effect Diagnoses without MCCmedical

How is Z04.3 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to Z04.3. They show the wording a clinician may have documented, which often differs from the Tabular description.

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

Excludes2 — not included here — inherited from Z00-Z13

The conditions below are not part of Z04.3, but a patient may have both at the same time. When documentation supports it, Z04.3 and the excluded code may both be reported.

examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

How long has Z04.3 existed?

Z04.3 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.