MCMCB Pro
T84.418D

T84.418DBreakdown (mechanical) of other internal orthopedic devices, implants and grafts, subsequent encounter

Billable / specific codeICD-10-CMPOA exempt

T84.418D is a billable, specific ICD-10-CM code for breakdown (mechanical) of other internal orthopedic devices, implants and grafts, 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 T84

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

T84.418D 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

T84.418D is named in 11 Medicare coverage policies 11 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A53058Billing and Coding: Home Health Physical Therapy
  • A53065Billing and Coding: Outpatient Physical Therapy
  • A57311Billing and Coding: Physical Therapy - Home Health
  • A57765Billing and Coding: Major Joint Replacement (Hip and Knee)

Related codes at this level

Codes that share T84.418. If T84.418D is not quite right, the correct code is usually one of these.

Questions about T84.418D

Is T84.418D a billable ICD-10-CM code?
Yes. T84.418D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T84.418D 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.