MCMCB Pro
T82.599A

T82.599AOther mechanical complication of unspecified cardiac and vascular devices and implants, initial encounter

Billable / specific codeICD-10-CM

T82.599A is a billable, specific ICD-10-CM code for other mechanical complication of unspecified cardiac and vascular devices and implants, 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 T82

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

T82.599A 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

T82.599A is named in 5 Medicare coverage policies 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52868Billing and Coding: Transesophageal Echocardiography (TEE)
  • A52868Billing and Coding: Transesophageal Echocardiography (TEE)
  • A56625Billing and Coding: Echocardiography
  • A56781Billing and Coding: Transthoracic Echocardiography (TTE)

Related codes at this level

Codes that share T82.599. If T82.599A is not quite right, the correct code is usually one of these.

Questions about T82.599A

Is T82.599A a billable ICD-10-CM code?
Yes. T82.599A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T82.599A sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).
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.