T68.XXXD — Hypothermia, subsequent encounter
T68.XXXD is a billable, specific ICD-10-CM code for hypothermia, subsequent encounter. It is valid for submission on a claim.
7th character "D" — subsequent encounter
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.
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.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Accidental hypothermia
- Hypothermia NOS
Excludes1 inherited from the categories above T68.XXXD
These are not written on T68.XXXD, but they bind it: a note on a category applies to every code beneath it. Billing T68.XXXD with anything listed here is a denial.
Excludes2 inherited from the categories above T68.XXXD
Also inherited, and the opposite of Excludes1: these conditions are not part of T68.XXXD, but a patient can have both, so you may code both.
Risk adjustment
T68.XXXD 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.XXXD 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
Code history
T68.XXXD has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share T68. If T68.XXXD is not quite right, the correct code is usually one of these.
Questions about T68.XXXD
- Is T68.XXXD a billable ICD-10-CM code?
- Yes. T68.XXXD is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T68.XXXD 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.XXXD?
- T68.XXXD carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above T68.XXXD (T68) and apply to it just the same.