T20.4 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Corrosion of unspecified degree of head, face, and neck.
Code first
T51-T65) to identify chemical and intent
Use additional code
External cause code to identify place (Y92)
Codes
T20.40
Corrosion of unspecified degree of head, face, and neck, unspecified site
T20.41
Corrosion of unspecified degree of ear [any part, except ear drum]
T20.42
Corrosion of unspecified degree of lip(s)
T20.43
Corrosion of unspecified degree of chin
T20.44
Corrosion of unspecified degree of nose (septum)
T20.45
Corrosion of unspecified degree of scalp [any part]
T20.46
Corrosion of unspecified degree of forehead and cheek
T20.47
Corrosion of unspecified degree of neck
T20.49
Corrosion of unspecified degree of multiple sites of head, face, and neck
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code