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ICD-10/X37.9XXD

X37.9XXD ICD-10-CM Code: Unspecified cataclysmic storm, subsequent encounter

X37.9XXD is the authoritative medical code for Unspecified cataclysmic storm, subsequent encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for unspecified cataclysmic storm, subsequent encounter (ICD-10-CM X37.9XXD), ensuring healthcare documentation aligns with current federal coding standards.

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Unspecified cataclysmic storm, subsequent encounter is a billable ICD-10-CM diagnosis code (X37.9D). Inclusion terms: Storm NOS. Excludes1 (not coded here): collapse of dam or man-made structure causing earth movement (X36.0). 7th character: The appropriate 7th character is to be added to each code from category X37.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for X37.9XXD in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Storm NOS

Excludes1 — Not Coded Here

Conditions that can never be reported with this code; the two are mutually exclusive.

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

Frequently Asked Questions (FAQ) & Clinical Guidance

Does X37.9XXD require a 7th character?

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

What can't be coded together with X37.9XXD?

Per official ICD-10-CM Excludes1 instructions, X37.9XXD must not be reported together with: collapse of dam or man-made structure causing earth movement (X36.0).

What conditions are included under X37.9XXD?

Unspecified cataclysmic storm, subsequent encounter includes: Storm NOS.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to X37.9XXD in its code family, with their registry titles.

  • X37.43XA — Tidal wave due to landslide, initial encounter
  • X37.43XD — Tidal wave due to landslide, subsequent encounter
  • X37.43XS — Tidal wave due to landslide, sequela
  • X37.8 — Other cataclysmic storms
  • X37.8XXA — Other cataclysmic storms, initial encounter
  • X37.8XXD — Other cataclysmic storms, subsequent encounter
  • X37.8XXS — Other cataclysmic storms, sequela
  • X37.9 — Unspecified cataclysmic storm
  • X37.9XXA — Unspecified cataclysmic storm, initial encounter
  • X37.9XXS — Unspecified cataclysmic storm, sequela

View all codes in the X37 family