T21.51XS

T21.51XS: Corrosion of first degree of chest wall, sequela

Billable / specific codeICD-10-CMPOA exempt

T21.51XS is a billable, specific ICD-10-CM code for corrosion of first degree of chest wall, sequela. It is valid for submission on a claim.

Check T21.51XS with the rest of the claim: free scrubber

7th character "S": sequela

The appropriate 7th character is to be added to each code from category T21

A: initial encounter
D: subsequent encounter
S: sequela

Inclusion terms

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

Corrosion of first degree of breast

Excludes2 inherited from the categories above T21.51XS

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

Written on T21: Burn and corrosion of trunk

burns and corrosion of axilla (T22.- with fifth character 4)
burns and corrosion of scapular region (T22.- with fifth character 6)
burns and corrosion of shoulder (T22.- with fifth character 5)

Risk adjustment

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

Medicare coverage

T21.51XS is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A59186Billing and Coding: Magnesium

Code history

Unchanged in every release from FY2024 to FY2027.