MCMedicalCodingSoftware
T63.021D

T63.021D: Toxic effect of coral snake venom, accidental (unintentional), subsequent encounter

Billable / specific codeICD-10-CMPOA exempt

T63.021D is a billable, specific ICD-10-CM code for toxic effect of coral snake venom, accidental (unintentional), subsequent encounter. It is valid for submission on a claim.

Check T63.021D 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 T63

A
initial encounter
D
subsequent encounter
S
sequela

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Toxic effect of coral snake venom NOS

Excludes2 inherited from the categories above T63.021D

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

Written on T63: Toxic effect of contact with venomous animals and plants

  • ingestion of toxic animal or plant (T61.-, T62.-)

Other codes that can never be billed with T63.021D

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • W64Exposure to other animate mechanical forces
  • W64.XXXAExposure to other animate mechanical forces, initial encounter
  • W64.XXXDExposure to other animate mechanical forces, subsequent encounter
  • W64.XXXSExposure to other animate mechanical forces, sequela
  • W56Contact with nonvenomous marine animal

Risk adjustment

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

Medicare coverage

T63.021D is named in 13 Medicare coverage policies: 13 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56612Billing and Coding: CT of the Head
  • A56844Billing and Coding: RAST Type Tests
  • A57326Billing and Coding: Electrocardiograms
  • A60360Billing and Coding: Allergy Diagnostic Testing

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under T63.021

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.