X31.XXXS — Exposure to excessive natural cold, sequela
Is X31.XXXS billable?
Yes — X31.XXXS is billable for FY2027. X31.XXXS is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. X31.XXXS may be submitted for encounters from October 1, 2026 through September 30, 2027.
X31.XXXS at a glance
| Code | X31.XXXS |
|---|---|
| Description | Exposure to excessive natural cold, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is X31.XXXS listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under X31, the nearest indexed parent of X31.XXXS. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Frostbite
- Exposure › cold (to)
- Forces of nature › cold
- Immersion › hand or foot due to cold (accidental)
- Overexposure › cold (accidental) (to)
- Exposure › cold › due to › weather (to)
Excludes1 — never code together
The conditions below can never be reported together with X31.XXXS on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Inclusion terms
Alternative wording in documentation that is classified to X31.XXXS.
- Excessive cold as the cause of chilblains NOS
- Excessive cold as the cause of immersion foot or hand
- Exposure to cold NOS
- Exposure to weather conditions
Excludes1 — never code together — inherited from X31
The conditions below can never be reported together with X31.XXXS on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
How long has X31.XXXS existed?
X31.XXXS 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.