MCMedicalCodingSoftware
X37.9

X37.9: Unspecified cataclysmic storm

Non-billable headerICD-10-CM

X37.9 is a non-billable header ICD-10-CM code for unspecified cataclysmic storm. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

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

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Forces of nature›cataclysmic storm

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead X37.9

3 child codes. Green means billable.

Other codes under X37

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.