T21.61 — Corrosion of second degree of chest wall
T21.61 is a non-billable header ICD-10-CM code for corrosion of second degree of chest wall. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
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 second degree of breast
Risk adjustment
T21.61 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.
How T21.61 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to T21.61.
- Corrosion›chest wall›second degree
Code to one of these instead T21.61
3 child codes. Green means billable.
Related codes at this level
Codes that share T21.6. If T21.61 is not quite right, the correct code is usually one of these.
- T21.60Corrosion of second degree of trunk, unspecified site
- T21.62Corrosion of second degree of abdominal wall
- T21.63Corrosion of second degree of upper back
- T21.64Corrosion of second degree of lower back
- T21.65Corrosion of second degree of buttock
- T21.66Corrosion of second degree of male genital region
- T21.67Corrosion of second degree of female genital region
- T21.69Corrosion of second degree of other site of trunk
Questions about T21.61
- Is T21.61 a billable ICD-10-CM code?
- No. T21.61 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T21.61 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Burns and corrosions of external body surface, specified by site (T20-T25).