Is X37.9XXS a billable ICD-10-CM code?

Yes. X37.9XXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does X37.9XXS sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Exposure to forces of nature (X30-X39).

What cannot be coded together with X37.9XXS?

X37.9XXS carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above X37.9XXS (X37.9) and apply to it just the same.

X37.9XXS

X37.9XXS — Unspecified cataclysmic storm, sequela

Billable / specific codeICD-10-CMPOA exempt

X37.9XXS is a billable, specific ICD-10-CM code for unspecified cataclysmic storm, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to each code from category X37

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

collapse of dam or man-made structure causing earth movement (X36.0)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Storm NOS

Excludes1 inherited from the categories above X37.9XXS

These are not written on X37.9XXS, but they bind it: a note on a category applies to every code beneath it. Billing X37.9XXS with anything listed here is a denial.

Written on X37.9 — Unspecified cataclysmic storm

collapse of dam or man-made structure causing earth movement (X36.0)

Risk adjustment

X37.9XXS does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

X37.9XXS has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share X37.9. If X37.9XXS is not quite right, the correct code is usually one of these.

Questions about X37.9XXS

Is X37.9XXS a billable ICD-10-CM code?: Yes. X37.9XXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does X37.9XXS sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Exposure to forces of nature (X30-X39).
What cannot be coded together with X37.9XXS?: X37.9XXS carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above X37.9XXS (X37.9) and apply to it just the same.