T70.29XA — Other effects of high altitude, initial encounter
T70.29XA is a billable, specific ICD-10-CM code for other effects of high altitude, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category T70
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Alpine sickness
- Anoxia due to high altitude
- Barotrauma NOS
- Hypobaropathy
- Mountain sickness
Risk adjustment
T70.29XA 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
T70.29XA is named in 2 Medicare coverage policies — 2 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
- A57326Billing and Coding: Electrocardiograms
Related codes at this level
Codes that share T70.29. If T70.29XA is not quite right, the correct code is usually one of these.
Questions about T70.29XA
- Is T70.29XA a billable ICD-10-CM code?
- Yes. T70.29XA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T70.29XA 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).