MCMCB Pro
T68.XXXS

T68.XXXSHypothermia, sequela

Billable / specific codeICD-10-CMPOA exempt

T68.XXXS is a billable, specific ICD-10-CM code for hypothermia, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to code T68

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.

  • hypothermia following anesthesia (T88.51)
  • hypothermia not associated with low environmental temperature (R68.0)
  • hypothermia of newborn (P80.-)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

Use additional code

Add a secondary code to capture the detail described below.

  • code to identify source of exposure:
  • Exposure to excessive cold of man-made origin (W93)
  • Exposure to excessive cold of natural origin (X31)

Inclusion terms

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

  • Accidental hypothermia
  • Hypothermia NOS

Risk adjustment

T68.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.

Medicare coverage

T68.XXXS is named in 1 Medicare coverage policy 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56612Billing and Coding: CT of the Head

Related codes at this level

Codes that share T68. If T68.XXXS is not quite right, the correct code is usually one of these.

Questions about T68.XXXS

Is T68.XXXS a billable ICD-10-CM code?
Yes. T68.XXXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T68.XXXS sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Other and unspecified effects of external causes (T66-T78).
What cannot be coded together with T68.XXXS?
T68.XXXS carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.