S99.921A Unspecified injury of right foot, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S99.921 with 7th character A (initial encounter).

Applies from S99.9 Unspecified injury of ankle and foot

7th character note

• The appropriate 7th character is to be added to each code from subcategory S99.9

7th character required

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

Code annotations containing back-references to S99.921A

Back-references to S99

• Type 2 Excludes: S89 Other and unspecified injuries of lower leg ("other and unspecified injuries of ankle and foot (S99.-)")

Nearby codes

• S99.919A Unspecified injury of unspecified ankle, initial encounter
• S99.919D Unspecified injury of unspecified ankle, subsequent encounter
• S99.919S Unspecified injury of unspecified ankle, sequela
• S99.92 Unspecified injury of foot
• S99.921 Unspecified injury of right foot
• S99.921A Unspecified injury of right foot, initial encounter (this code)
• S99.921D Unspecified injury of right foot, subsequent encounter
• S99.921S Unspecified injury of right foot, sequela
• S99.922 Unspecified injury of left foot
• S99.922A Unspecified injury of left foot, initial encounter
• S99.922D Unspecified injury of left foot, subsequent encounter