S85.509A Unspecified injury of popliteal vein, unspecified leg, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S85.509 with 7th character A (initial encounter).

Applies from S85 Injury of blood vessels at lower leg level

Excludes2 (not included here)

• injury of blood vessels at ankle and foot level (S95.-)

Code also

• any associated open wound (S81.-)

7th character note

• The appropriate 7th character is to be added to each code from category S85

7th character required

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

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 S85.509A

Back-references to S85

• Type 2 Excludes: M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")
• Type 2 Excludes: S75 Injury of blood vessels at hip and thigh level ("injury of blood vessels at lower leg level (S85.-)")

Nearby codes

• S85.502 Unspecified injury of popliteal vein, left leg
• S85.502A Unspecified injury of popliteal vein, left leg, initial encounter
• S85.502D Unspecified injury of popliteal vein, left leg, subsequent encounter
• S85.502S Unspecified injury of popliteal vein, left leg, sequela
• S85.509 Unspecified injury of popliteal vein, unspecified leg
• S85.509A Unspecified injury of popliteal vein, unspecified leg, initial encounter (this code)
• S85.509D Unspecified injury of popliteal vein, unspecified leg, subsequent encounter
• S85.509S Unspecified injury of popliteal vein, unspecified leg, sequela
• S85.51 Laceration of popliteal vein
• S85.511 Laceration of popliteal vein, right leg
• S85.511A Laceration of popliteal vein, right leg, initial encounter