T20.49 Corrosion of unspecified degree of multiple sites of head, face, and neck

The following code(s) above T20.49 may contain annotation back-references that may be applicable to T20.49:

• Injury, poisoning and certain other consequences of external causes (S00-T88)
• Corrosion of unspecified degree of head, face, and neck (T20.4)

Diagnosis Index

Corrosion T30.4
- Head T20.40
-- Multiple Sites T20.49