T33.99 Superficial frostbite of other sites

The ICD-10-CM code for Superficial frostbite of other sites is T33.99 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

19: Injury, poisoning and certain other consequences of external causes (S00-T88)

Section

T33-T34: Frostbite (T33-T34)

Category T33

52 codes (37 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to T33.99:

• Frostbite (superficial) › leg
• Frostbite (superficial) › trunk
• Frostbite (superficial) › specified site NEC
• Frostbite (superficial) › limb › lower

Inclusion Terms

• Superficial frostbite of leg NOS
• Superficial frostbite of trunk NOS

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool

Cite This Page

Reference T33.99 with the canonical source and edition:

T33.99 — Superficial frostbite of other sites. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/T33.99

Canonical URL: https://icd10codingpro.com/codes/T33.99