X37.9XXA is the authoritative medical code for Unspecified cataclysmic storm, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for unspecified cataclysmic storm, initial encounter (ICD-10-CM X37.9XXA), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Unspecified cataclysmic storm, initial encounter is a billable ICD-10-CM diagnosis code X37.9A. 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 X37.9XXA in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
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 X37.9XXA 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 X37.9XXA?
Per Excludes1 instructions, X37.9XXA must not be reported with: collapse of dam or man-made structure causing earth movement (X36.0).
What conditions are included under X37.9XXA?
Unspecified cataclysmic storm, initial encounter includes: Storm NOS.
Codes in This Family (37)
Official ICD-10-CM classifications in the same code family as X37.9XXA, with their registry titles.
- X37 — Cataclysmic storm
- X37.0 — Hurricane
- X37.0XXA — Hurricane, initial encounter
- X37.0XXD — Hurricane, subsequent encounter
- X37.0XXS — Hurricane, sequela
- X37.1 — Tornado
- X37.1XXA — Tornado, initial encounter
- X37.1XXD — Tornado, subsequent encounter
- X37.1XXS — Tornado, sequela
- X37.2 — Blizzard (snow)(ice)
- X37.2XXA — Blizzard (snow)(ice), initial encounter
- X37.2XXD — Blizzard (snow)(ice), subsequent encounter
- X37.2XXS — Blizzard (snow)(ice), sequela
- X37.3 — Dust storm
- X37.3XXA — Dust storm, initial encounter
- X37.3XXD — Dust storm, subsequent encounter
- X37.3XXS — Dust storm, sequela
- X37.4 — Tidalwave
- X37.41 — Tidal wave due to earthquake or volcanic eruption
- X37.41XA — Tidal wave due to earthquake or volcanic eruption, initial encounter
- X37.41XD — Tidal wave due to earthquake or volcanic eruption, subsequent encounter
- X37.41XS — Tidal wave due to earthquake or volcanic eruption, sequela
- X37.42 — Tidal wave due to storm
- X37.42XA — Tidal wave due to storm, initial encounter
- X37.42XD — Tidal wave due to storm, subsequent encounter
- X37.42XS — Tidal wave due to storm, sequela
- X37.43 — Tidal wave due to landslide
- 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
- X37.9XXD — Unspecified cataclysmic storm, subsequent encounter
- X37.9XXS — Unspecified cataclysmic storm, sequela
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: