X37.41XA — Tidal wave due to earthquake or volcanic eruption, initial encounter
Is X37.41XA billable?
Yes — X37.41XA is billable for FY2027. X37.41XA is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. X37.41XA may be submitted for encounters from October 1, 2026 through September 30, 2027.
X37.41XA at a glance
| Code | X37.41XA |
|---|---|
| Description | Tidal wave due to earthquake or volcanic eruption, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in X37.41XA?
In X37.41XA, the 7th character A means initial encounter. The 7th character is required for X37.41XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is X37.41XA listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under X37.41, the nearest indexed parent of X37.41XA. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Forces of nature › tidal wave
- Forces of nature › tsunami
- Forces of nature › tidal wave › due to › earthquake
- Forces of nature › tidal wave › due to › volcanic eruption
Inclusion terms
Alternative wording in documentation that is classified to X37.41XA.
- Tidal wave NOS
- Tsunami
How long has X37.41XA existed?
X37.41XA 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.