Is X30.XXXS a billable ICD-10-CM code?

Yes. X30.XXXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does X30.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 X30.XXXS?

X30.XXXS carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

X30.XXXS

X30.XXXS — Exposure to excessive natural heat, sequela

Billable / specific codeICD-10-CMPOA exempt

X30.XXXS is a billable, specific ICD-10-CM code for exposure to excessive natural heat, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to code X30

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.

excessive heat of man-made origin (W92)
exposure to man-made radiation (W89)
exposure to sunlight (X32)
exposure to tanning bed (W89)

Inclusion terms

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

Exposure to excessive heat as the cause of sunstroke
Exposure to heat NOS

Risk adjustment

X30.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 X30. If X30.XXXS is not quite right, the correct code is usually one of these.

Questions about X30.XXXS

Is X30.XXXS a billable ICD-10-CM code?: Yes. X30.XXXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does X30.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 X30.XXXS?: X30.XXXS carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.