Z04.2 — Encounter for examination and observation following work accident
Is Z04.2 billable?
Yes — Z04.2 is billable for FY2027. Z04.2 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z04.2 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z04.2 at a glance
| Code | Z04.2 |
|---|---|
| Description | Encounter for examination and observation following work accident |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Z04.2 group to?
Z04.2 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 Z04.2 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z04.2. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Observation › following work accident (following) (for) (without need for further medical care)
- Observation › accident NEC › at work (following) (for) (without need for further medical care)
- Observation › suspected, ruled out › accident at work (following) (for) (without need for further medical care)
- Examination › following › accident NEC › work (for) (following) (general) (of) (routine)
Excludes2 — not included here — inherited from Z00-Z13
The conditions below are not part of Z04.2, but a patient may have both at the same time. When documentation supports it, Z04.2 and the excluded code may both be reported.
How long has Z04.2 existed?
Z04.2 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.
Which codes are confused with Z04.2?
ICD-10-CM declares these codes mutually exclusive with Z04.2 — exactly one of each pair can be correct for a given encounter.
Which conditions are coded to Z04.2?
What other codes are in the Z04 family? (7)
- Z04.1Encounter for examination and observation following transport accident
- Z04.3Encounter for examination and observation following other accident
- Z04.4Encounter for examination and observation following alleged rapenot billable
- Z04.6Encounter for general psychiatric examination, requested by authority
- Z04.7Encounter for examination and observation following alleged physical abusenot billable
- Z04.8Encounter for examination and observation for other specified reasonsnot billable
- Z04.9Encounter for examination and observation for unspecified reason