T69.029A Immersion foot, unspecified foot, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T69.029 with 7th character A (initial encounter).

Applies from T69 Other effects of reduced temperature

Excludes2 (not included here)

• frostbite (T33-T34)

Use additional code

• code to identify source of exposure:
• Exposure to excessive cold of man-made origin (W93)
• Exposure to excessive cold of natural origin (X31)

7th character note

• The appropriate 7th character is to be added to each code from category T69

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from T69.02 Immersion foot

Applicable to

• Trench foot

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Code annotations containing back-references to T69.029A

Back-references to T69.0

• Type 2 Excludes: I73 Other peripheral vascular diseases ("immersion hand or foot (T69.0-)")

Nearby codes

• T69.022 Immersion foot, left foot
• T69.022A Immersion foot, left foot, initial encounter
• T69.022D Immersion foot, left foot, subsequent encounter
• T69.022S Immersion foot, left foot, sequela
• T69.029 Immersion foot, unspecified foot
• T69.029A Immersion foot, unspecified foot, initial encounter (this code)
• T69.029D Immersion foot, unspecified foot, subsequent encounter
• T69.029S Immersion foot, unspecified foot, sequela
• T69.1 Chilblains
• T69.1XXA Chilblains, initial encounter
• T69.1XXD Chilblains, subsequent encounter