T33
Superficial frostbite
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 2 never code together
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 4
T33code
Includes
- frostbite with partial thickness skin loss
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 10
T33.0 Superficial frostbite of head T33.1 Superficial frostbite of neck T33.2 Superficial frostbite of thorax T33.3 Superficial frostbite of abd wall, lower back and pelvis T33.4 Superficial frostbite of arm T33.5 Superficial frostbite of wrist, hand, and fingers T33.6 Superficial frostbite of hip and thigh T33.7 Superficial frostbite of knee and lower leg T33.8 Superficial frostbite of ankle, foot, and toe(s) T33.9 Superficial frostbite of other and unspecified sites
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.