T23.21 Burn of second degree of thumb (nail)

Non-billable header with 3 child codes.

Applies from T23 Burn and corrosion of wrist and hand

7th character note

• The appropriate 7th character is to be added to each code from category T23

7th character required

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

Applies from T23.2 Burn of second degree of wrist and hand

Use additional code

• external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)

Codes under T23.21

• T23.211 Burn of second degree of right thumb (nail)
• T23.212 Burn of second degree of left thumb (nail)
• T23.219 Burn of second degree of unspecified thumb (nail)

Code annotations containing back-references to T23.21

Back-references to T23

• Type 2 Excludes: T22 Burn and corrosion of shoulder and upper limb, except wrist and hand ("burn and corrosion of wrist and hand (T23.-)")
• Type 1 Excludes: T66 Radiation sickness, unspecified ("burns (T20-T31)")
• Type 2 Excludes: T67 Effects of heat and light ("burns (T20-T31)")
• Type 2 Excludes: T75 Other and unspecified effects of other external causes ("burns (electric) (T20-T31)")

Nearby codes

• T23.202S Burn of second degree of left hand, unspecified site, sequela
• T23.209 Burn of second degree of unspecified hand, unspecified site
• T23.209A Burn of second degree of unspecified hand, unspecified site, initial encounter
• T23.209D Burn of second degree of unspecified hand, unspecified site, subsequent encounter
• T23.209S Burn of second degree of unspecified hand, unspecified site, sequela
• T23.21 Burn of second degree of thumb (nail) (this code)
• T23.211 Burn of second degree of right thumb (nail)
• T23.211A Burn of second degree of right thumb (nail), initial encounter
• T23.211D Burn of second degree of right thumb (nail), subsequent encounter
• T23.211S Burn of second degree of right thumb (nail), sequela
• T23.212 Burn of second degree of left thumb (nail)