Is X31.XXXS a billable ICD-10-CM code?

Yes. X31.XXXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does X31.XXXS sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Exposure to forces of nature (X30-X39).

What cannot be coded together with X31.XXXS?

X31.XXXS carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

X31.XXXS

X31.XXXS — Exposure to excessive natural cold, sequela

Billable / specific codeICD-10-CMPOA exempt

X31.XXXS is a billable, specific ICD-10-CM code for exposure to excessive natural cold, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to code X31

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

cold of man-made origin (W93.-)
contact with or inhalation of dry ice (W93.-)
contact with or inhalation of liquefied gas (W93.-)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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

Risk adjustment

X31.XXXS does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Related codes at this level

Codes that share X31. If X31.XXXS is not quite right, the correct code is usually one of these.

Questions about X31.XXXS

Is X31.XXXS a billable ICD-10-CM code?: Yes. X31.XXXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does X31.XXXS sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Exposure to forces of nature (X30-X39).
What cannot be coded together with X31.XXXS?: X31.XXXS carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.