W21.00XS — Struck by hit or thrown ball, unspecified type, sequela
Is W21.00XS billable?
Yes, but W21.00XS is an unspecified code. W21.00XS is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, W21.00XS is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting W21.00XS — the more specific alternatives are listed below.
More specific alternatives
- W21.01XSStruck by football, sequela
- W21.02XSStruck by soccer ball, sequela
- W21.03XSStruck by baseball, sequela
- W21.04XSStruck by golf ball, sequela
- W21.05XSStruck by basketball, sequela
- W21.06XSStruck by volleyball, sequela
- W21.07XSStruck by softball, sequela
- W21.09XSStruck by other hit or thrown ball, sequela
W21.00XS at a glance
| Code | W21.00XS |
|---|---|
| Description | Struck by hit or thrown ball, unspecified type, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in W21.00XS?
In W21.00XS, the 7th character S means sequela. The 7th character is required for W21.00XS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is W21.00XS listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under W21.00, the nearest indexed parent of W21.00XS. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Struckby › ball (accidentally)
- Struckby › sports equipment › ball (accidentally)
- Struckby › object › projected › in sports › ball (accidentally)
- Struckby › object › thrown › in sports › ball (accidentally)
Excludes1 — never code together — inherited from W20-W49
The conditions below can never be reported together with W21.00XS on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from W21
The conditions below can never be reported together with W21.00XS on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
How long has W21.00XS existed?
W21.00XS 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.