T20.42XS

T20.42XS: Corrosion of unspecified degree of lip(s), sequela

Billable / specific codeICD-10-CMPOA exempt

T20.42XS is a billable, specific ICD-10-CM code for corrosion of unspecified degree of lip(s), sequela. It is valid for submission on a claim.

Check T20.42XS 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 T20

A: initial encounter
D: subsequent encounter
S: sequela

Excludes2 inherited from the categories above T20.42XS

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

Written on T20: Burn and corrosion of head, face, and neck

burn and corrosion of ear drum (T28.41, T28.91)
burn and corrosion of eye and adnexa (T26.-)
burn and corrosion of mouth and pharynx (T28.0)

Risk adjustment

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

Medicare coverage

T20.42XS 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.