S91.00 Unspecified open wound of ankle

Non-billable header with 3 child codes.

Applies from S91 Open wound of ankle, foot and toes

Excludes1 (never code together)

• open fracture of ankle, foot and toes (S92.-with 7th character B)
• traumatic amputation of ankle and foot (S98.-)

Code also

• any associated wound infection

7th character note

• The appropriate 7th character is to be added to each code from category S91

7th character required

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

Codes under S91.00

• S91.001 Unspecified open wound, right ankle
• S91.002 Unspecified open wound, left ankle
• S91.009 Unspecified open wound, unspecified ankle

Code annotations containing back-references to S91.00

Back-references to S91

• Type 2 Excludes: S71 Open wound of hip and thigh ("open wound of ankle, foot and toes (S91.-)")
• Type 2 Excludes: S81 Open wound of knee and lower leg ("open wound of ankle and foot (S91.-)")
• Code Also: S94 Injury of nerves at ankle and foot level ("any associated open wound (S91.-)")
• Code Also: S95 Injury of blood vessels at ankle and foot level ("any associated open wound (S91.-)")
• Code Also: S96 Injury of muscle and tendon at ankle and foot level ("any associated open wound (S91.-)")

Diagnosis Index entries for S91.00

• Wound, open › ankle

Nearby codes

• S91 Open wound of ankle, foot and toes
• S91.0 Open wound of ankle
• S91.00 Unspecified open wound of ankle (this code)
• S91.001 Unspecified open wound, right ankle
• S91.001A Unspecified open wound, right ankle, initial encounter
• S91.001D Unspecified open wound, right ankle, subsequent encounter
• S91.001S Unspecified open wound, right ankle, sequela
• S91.002 Unspecified open wound, left ankle