X31 Exposure to excessive natural cold
ICD-10-CM category X31 sits in Chapter 20 (External causes of morbidity, V00-Y99). It contains 3 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Billable codes in X31
| Code | Description |
|---|---|
X31.XXXA | Exposure to excessive natural cold, initial encounter |
X31.XXXD | Exposure to excessive natural cold, subsequent encounter |
X31.XXXS | Exposure to excessive natural cold, sequela |
Search within ICD-10-CM for X31 and related codes
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