X37.9XXS — Unspecified cataclysmic storm, sequela
Is X37.9XXS billable?
Yes, but X37.9XXS is an unspecified code. X37.9XXS is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, X37.9XXS 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 X37.9XXS — the more specific alternatives are listed below.
X37.9XXS at a glance
| Code | X37.9XXS |
|---|---|
| Description | Unspecified cataclysmic storm, 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 X37.9XXS?
In X37.9XXS, the 7th character S means sequela. The 7th character is required for X37.9XXS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is X37.9XXS listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under X37.9, the nearest indexed parent of X37.9XXS. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Forces of nature › cataclysmic storm
Excludes1 — never code together
The conditions below can never be reported together with X37.9XXS on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- collapse of dam or man-made structure causing earth movement (X36.0)
Inclusion terms
Alternative wording in documentation that is classified to X37.9XXS.
- Storm NOS
Excludes1 — never code together — inherited from X37.9
The conditions below can never be reported together with X37.9XXS on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- collapse of dam or man-made structure causing earth movement (X36.0)
How long has X37.9XXS existed?
X37.9XXS 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.