MCMCB Pro
T88.9XXD

T88.9XXDComplication of surgical and medical care, unspecified, subsequent encounter

Billable / specific codeICD-10-CMPOA exempt

T88.9XXD is a billable, specific ICD-10-CM code for complication of surgical and medical care, unspecified, subsequent encounter. It is valid for submission on a claim.

7th character "D" — subsequent encounter

The appropriate 7th character is to be added to each code from category T88

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

T88.9XXD 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

T88.9XXD 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.

  • A57361Billing and Coding: Monitored Anesthesia Care

Related codes at this level

Codes that share T88.9. If T88.9XXD is not quite right, the correct code is usually one of these.

Questions about T88.9XXD

Is T88.9XXD a billable ICD-10-CM code?
Yes. T88.9XXD is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T88.9XXD 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.