S85.50 – Unspecified injury of popliteal vein

ICD-10-CM 2027 diagnosis code · Injuries to the knee and lower leg

Non-billable header

ICD-10-CM code S85.50

Code: S85.50 (claims format: S8550)
Description: Unspecified injury of popliteal vein
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: S80-S89 Injuries to the knee and lower leg
Parent codes: S85 › S85.5

Billable codes under S85.50

S85.50 is a header code and cannot be used on claims. Choose the most specific code:

S85.501 – Unspecified injury of popliteal vein, right legHeader (more codes below)
S85.502 – Unspecified injury of popliteal vein, left legHeader (more codes below)
S85.509 – Unspecified injury of popliteal vein, unspecified legHeader (more codes below)

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

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

Block S80-S89

Excludes2 (not included here):

burns and corrosions (T20-T32)
frostbite (T33-T34)
injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
insect bite or sting, venomous (T63.4)

Index terms for S85.50

Entries in the ICD-10-CM alphabetic index that lead to this code:

Injury, blood vessel NEC, popliteal, vein

Related codes in S85.5

Frequently asked questions

What is ICD-10 code S85.50?

S85.50 is the ICD-10-CM code for unspecified injury of popliteal vein, in the block S80-S89 (Injuries to the knee and lower leg).

Is S85.50 a billable code?

No. S85.50 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S85.50 belong to?

It belongs to category S85 – Injury of blood vessels at lower leg level.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.