T20.5 — Corrosion of first degree of head, face, and neck
Is T20.5 billable?
No — T20.5 is a non-billable header code. T20.5 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 33 billable codes beneath T20.5.
Billable codes under this header
- T20.50XACorrosion of first degree of head, face, and neck, unspecified site, initial encounter
- T20.50XDCorrosion of first degree of head, face, and neck, unspecified site, subsequent encounter
- T20.50XSCorrosion of first degree of head, face, and neck, unspecified site, sequela
- T20.52XACorrosion of first degree of lip(s), initial encounter
- T20.52XDCorrosion of first degree of lip(s), subsequent encounter
- T20.52XSCorrosion of first degree of lip(s), sequela
- T20.53XACorrosion of first degree of chin, initial encounter
- T20.53XDCorrosion of first degree of chin, subsequent encounter
- T20.53XSCorrosion of first degree of chin, sequela
- T20.54XACorrosion of first degree of nose (septum), initial encounter
- T20.54XDCorrosion of first degree of nose (septum), subsequent encounter
- T20.54XSCorrosion of first degree of nose (septum), sequela
- T20.55XACorrosion of first degree of scalp [any part], initial encounter
- T20.55XDCorrosion of first degree of scalp [any part], subsequent encounter
- T20.55XSCorrosion of first degree of scalp [any part], sequela
- T20.56XACorrosion of first degree of forehead and cheek, initial encounter
- T20.56XDCorrosion of first degree of forehead and cheek, subsequent encounter
- T20.56XSCorrosion of first degree of forehead and cheek, sequela
- T20.57XACorrosion of first degree of neck, initial encounter
- T20.57XDCorrosion of first degree of neck, subsequent encounter
- T20.57XSCorrosion of first degree of neck, sequela
- T20.59XACorrosion of first degree of multiple sites of head, face, and neck, initial encounter
- T20.59XDCorrosion of first degree of multiple sites of head, face, and neck, subsequent encounter
- T20.59XSCorrosion of first degree of multiple sites of head, face, and neck, sequela
- T20.511ACorrosion of first degree of right ear [any part, except ear drum], initial encounter
- T20.511DCorrosion of first degree of right ear [any part, except ear drum], subsequent encounter
- T20.511SCorrosion of first degree of right ear [any part, except ear drum], sequela
- T20.512ACorrosion of first degree of left ear [any part, except ear drum], initial encounter
- T20.512DCorrosion of first degree of left ear [any part, except ear drum], subsequent encounter
- T20.512SCorrosion of first degree of left ear [any part, except ear drum], sequela
- T20.519ACorrosion of first degree of unspecified ear [any part, except ear drum], initial encounter
- T20.519DCorrosion of first degree of unspecified ear [any part, except ear drum], subsequent encounter
- T20.519SCorrosion of first degree of unspecified ear [any part, except ear drum], sequela
T20.5 at a glance
| Code | T20.5 |
|---|---|
| Description | Corrosion of first degree of head, face, and neck |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Code first
The underlying condition below must be sequenced before T20.5. T20.5 describes a manifestation and cannot be the principal or first-listed diagnosis.
- (T51-T65) to identify chemical and intent
Use additional code
Report an additional code alongside T20.5 to fully describe the condition. T20.5 is sequenced first.
- external cause code to identify place (Y92)
Use additional code — inherited from Chapter 19
Report an additional code alongside T20.5 to fully describe the condition. T20.5 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T20-T25
Report an additional code alongside T20.5 to fully describe the condition. T20.5 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T20.5, but a patient may have both at the same time. When documentation supports it, T20.5 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T20
The conditions below are not part of T20.5, but a patient may have both at the same time. When documentation supports it, T20.5 and the excluded code may both be reported.
What codes fall under T20.5? (9)
- T20.50Corrosion of first degree of head, face, and neck, unspecified sitenot billable
- T20.51Corrosion of first degree of ear [any part, except ear drum]not billable
- T20.52Corrosion of first degree of lip(s)not billable
- T20.53Corrosion of first degree of chinnot billable
- T20.54Corrosion of first degree of nose (septum)not billable
- T20.55Corrosion of first degree of scalp [any part]not billable
- T20.56Corrosion of first degree of forehead and cheeknot billable
- T20.57Corrosion of first degree of necknot billable
- T20.59Corrosion of first degree of multiple sites of head, face, and necknot billable
How long has T20.5 existed?
T20.5 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the T20 family? (7)
- T20.0Burn of unspecified degree of head, face, and necknot billable
- T20.1Burn of first degree of head, face, and necknot billable
- T20.2Burn of second degree of head, face, and necknot billable
- T20.3Burn of third degree of head, face, and necknot billable
- T20.4Corrosion of unspecified degree of head, face, and necknot billable
- T20.6Corrosion of second degree of head, face, and necknot billable
- T20.7Corrosion of third degree of head, face, and necknot billable