T21.4 should not be used for reimbursement purposes as there are multiple sub-diagnoses that fall under this code. Please refer to the sub-diagnoses below.
Related Diagnoses
T21.41Corrosion of unspecified degree of chest wall
T21.41XACorrosion of unspecified degree of chest wall, initial encounter
T21.41XDCorrosion of unspecified degree of chest wall, subsequent encounter
T21.41XSCorrosion of unspecified degree of chest wall, sequela
T21.42Corrosion of unspecified degree of abdominal wall
T21.42XACorrosion of unspecified degree of abdominal wall, initial encounter
T21.42XDCorrosion of unspecified degree of abdominal wall, subsequent encounter
T21.42XSCorrosion of unspecified degree of abdominal wall, sequela
T21.40Corrosion of unspecified degree of trunk, unspecified site
T21.40XACorrosion of unspecified degree of trunk, unspecified site, initial encounter
T21.40XDCorrosion of unspecified degree of trunk, unspecified site, subsequent encounter
T21.40XSCorrosion of unspecified degree of trunk, unspecified site, sequela
T21.43Corrosion of unspecified degree of upper back
T21.43XACorrosion of unspecified degree of upper back, initial encounter
T21.43XDCorrosion of unspecified degree of upper back, subsequent encounter
T21.43XSCorrosion of unspecified degree of upper back, sequela
T21.44Corrosion of unspecified degree of lower back
T21.44XACorrosion of unspecified degree of lower back, initial encounter
T21.44XDCorrosion of unspecified degree of lower back, subsequent encounter
T21.44XSCorrosion of unspecified degree of lower back, sequela