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T45.2X6D

T45.2X6D: Underdosing of vitamins, subsequent encounter

Billable / specific codeICD-10-CMPOA exempt

T45.2X6D is a billable, specific ICD-10-CM code for underdosing of vitamins, subsequent encounter. It is valid for submission on a claim.

Check T45.2X6D with the rest of the claim: free scrubber

7th character "D": subsequent encounter

The appropriate 7th character is to be added to each code from category T45

A
initial encounter
D
subsequent encounter
S
sequela

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • vitamin deficiencies (E50-E56)

Excludes1 inherited from the categories above T45.2X6D

A category’s note binds every code beneath it.

Written on T45.2X6: Underdosing of vitamins

  • vitamin deficiencies (E50-E56)

Excludes2 inherited from the categories above T45.2X6D

Not part of this code, but both may be coded when both are present.

Written on T45.2: Poisoning by, adverse effect of and underdosing of vitamins

  • poisoning by, adverse effect of and underdosing of nicotinic acid (derivatives) (T46.7)
  • poisoning by, adverse effect of and underdosing of iron (T45.4)
  • poisoning by, adverse effect of and underdosing of vitamin K (T45.7)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under T45.2X6

ICD-10-CMFY2027· effective October 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.