Skip to main content

T22.592 vs T22.599

T22.592 (Corrosion of first degree of multiple sites of left shoulder and upper limb, except wrist and hand) compared with T22.599 (Corrosion of first degree of multiple sites of unspecified shoulder and upper limb, except wrist and hand), from the official CMS tabular data. T22.592 and T22.599 code the same condition on opposite sides.

Relationship

Review

Laterality relationship

T22.592
Left
Corrosion of first degree of multiple sites of left shoulder and upper limb, except wrist and hand
↔
T22.599
Unspecified
Corrosion of first degree of multiple sites of unspecified shoulder and upper limb, except wrist and hand

Same condition; these differ only in which side is documented.

These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.

Source: ICD-10-CM tabular list (laterality variant derived from the code title)

Can these codes be reported together?

Same condition, opposite side. T22.592 and T22.599 name the same condition on opposite sides of the body.

Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.

Side by side

T22.592Corrosion of first degree of multiple sites of left shoulder and upper limb, except wrist and handT22.599Corrosion of first degree of multiple sites of unspecified shoulder and upper limb, except wrist and hand
Billing statusNon-billable header

Report instead: T22.592A, T22.592D, T22.592S

Non-billable header

Report instead: T22.599A, T22.599D, T22.599S

ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionCorrosion of first degree of multiple sites of left shoulder and upper limb, except wrist and hand is a non-billable ICD-10-CM category code (T22.592).Corrosion of first degree of multiple sites of unspecified shoulder and upper limb, except wrist and hand is a non-billable ICD-10-CM category code (T22.599).
7th characterThe appropriate 7th character is to be added to each code from category T22The appropriate 7th character is to be added to each code from category T22
Includes
burns and corrosions of first degree [erythema]
burns and corrosions of second degree [blisters][epidermal loss]
burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]
burns and corrosions of first degree [erythema]
burns and corrosions of second degree [blisters][epidermal loss]
burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]
Use additional code
external cause code to identify place (Y92)
code from category T31 or T32 to identify extent of body surface involved
external cause code to identify place (Y92)
code from category T31 or T32 to identify extent of body surface involved
Code first
(T51-T65) to identify chemical and intent
(T51-T65) to identify chemical and intent
Edit this comparisonCheck a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources