S82.31 – Torus fracture of lower end of tibia

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

Non-billable header

ICD-10-CM code S82.31

Code: S82.31 (claims format: S8231)
Description: Torus fracture of lower end of tibia
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: S82 › S82.3

Billable codes under S82.31

S82.31 is a header code and cannot be used on claims. Choose the most specific code:

S82.311 – Torus fracture of lower end of right tibiaHeader (more codes below)
S82.312 – Torus fracture of lower end of left tibiaHeader (more codes below)
S82.319 – Torus fracture of lower end of unspecified tibiaHeader (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 for closed fracture
`D`	subsequent encounter for fracture with routine healing
`G`	subsequent encounter for fracture with delayed healing
`K`	subsequent encounter for fracture with nonunion
`P`	subsequent encounter for fracture with malunion
`S`	sequela

Notes for S82.31

7th character note:

The appropriate 7th character is to be added to all codes in subcategory S82.31

Notes inherited from parent codes

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

S82 – Fracture of lower leg, including ankle

Includes:

fracture of malleolus

Excludes1 (not coded here):

traumatic amputation of lower leg (S88.-)

Excludes2 (not included here):

fracture of foot, except ankle (S92.-)
periprosthetic fracture around internal prosthetic ankle joint (M97.2)
periprosthetic fracture around internal prosthetic implant of knee joint (M97.1-)

Notes:

A fracture not indicated as displaced or nondisplaced should be coded to displaced
A fracture not indicated as open or closed should be coded to closed
The open fracture designations are based on the Gustilo open fracture classification

7th character note:

The appropriate 7th character is to be added to all codes from category S82

S82.3 – Fracture of lower end of tibia

Excludes1 (not coded here):

bimalleolar fracture of lower leg (S82.84-)
fracture of medial malleolus alone (S82.5-)
Maisonneuve's fracture (S82.86-)
pilon fracture of distal tibia (S82.87-)
trimalleolar fractures of lower leg (S82.85-)

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 S82.31

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

Fracture, traumatic, tibia, lower end, torus

Related codes in S82.3

Frequently asked questions

What is ICD-10 code S82.31?

S82.31 is the ICD-10-CM code for torus fracture of lower end of tibia, in the block S80-S89 (Injuries to the knee and lower leg).

Is S82.31 a billable code?

No. S82.31 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S82.31 belong to?

It belongs to category S82 – Fracture of lower leg, including ankle.

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.