S20.172A Other superficial bite of breast, left breast, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S20.172 with 7th character A (initial encounter).

Applies from S20 Superficial injury of thorax

7th character note

• The appropriate 7th character is to be added to each code from category S20

7th character required

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

Applies from S20.17 Other superficial bite of breast

Excludes1 (never code together)

• open bite of breast (S21.05-)

Code annotations containing back-references to S20.172A

Back-references to S20.17

• Type 1 Excludes: S21.05 Open bite of breast ("superficial bite of breast (S20.17)")

Nearby codes

• S20.171 Other superficial bite of breast, right breast
• S20.171A Other superficial bite of breast, right breast, initial encounter
• S20.171D Other superficial bite of breast, right breast, subsequent encounter
• S20.171S Other superficial bite of breast, right breast, sequela
• S20.172 Other superficial bite of breast, left breast
• S20.172A Other superficial bite of breast, left breast, initial encounter (this code)
• S20.172D Other superficial bite of breast, left breast, subsequent encounter
• S20.172S Other superficial bite of breast, left breast, sequela
• S20.179 Other superficial bite of breast, unspecified breast
• S20.179A Other superficial bite of breast, unspecified breast, initial encounter
• S20.179D Other superficial bite of breast, unspecified breast, subsequent encounter