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T44.2X5A

T44.2X5AAdverse effect of ganglionic blocking drugs, initial encounter

Billable / specific codeICD-10-CM

T44.2X5A is a billable, specific ICD-10-CM code for adverse effect of ganglionic blocking drugs, 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 T44

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

T44.2X5A 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

T44.2X5A is named in 17 Medicare coverage policies 17 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
  • A56844Billing and Coding: RAST Type Tests
  • A57043Billing and Coding: RAST Type Tests
  • A57181Billing and Coding: Allergy Testing

Related codes at this level

Codes that share T44.2X5. If T44.2X5A is not quite right, the correct code is usually one of these.

Questions about T44.2X5A

Is T44.2X5A a billable ICD-10-CM code?
Yes. T44.2X5A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T44.2X5A sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).
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.