S82.66

S82.66: Nondisplaced fracture of lateral malleolus of unspecified fibula

Non-billable headerICD-10-CM

S82.66 is a non-billable header ICD-10-CM code for nondisplaced fracture of lateral malleolus of unspecified fibula. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

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

A: initial encounter for closed fracture
B: initial encounter for open fracture type I or II
C: initial encounter for open fracture type IIIA, IIIB, or IIIC
D: subsequent encounter for closed fracture with routine healing
E: subsequent encounter for open fracture type I or II with routine healing
F: subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
G: subsequent encounter for closed fracture with delayed healing
H: subsequent encounter for open fracture type I or II with delayed healing
J: subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
K: subsequent encounter for closed fracture with nonunion
M: subsequent encounter for open fracture type I or II with nonunion
N: subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
P: subsequent encounter for closed fracture with malunion
Q: subsequent encounter for open fracture type I or II with malunion
R: subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S: sequela

Excludes1 inherited from the categories above S82.66

A category’s note binds every code beneath it.

Written on S82.6: Fracture of lateral malleolus

pilon fracture of distal tibia (S82.87-)

Written on S82: Fracture of lower leg, including ankle

traumatic amputation of lower leg (S88.-)

Excludes2 inherited from the categories above S82.66

Not part of this code, but both may be coded when both are present.

Written on S82: Fracture of lower leg, including ankle

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-)

Other codes that can never be billed with S82.66

Their own Excludes1 notes name this code, so the conflict is not listed above.

M84.3Stress fracture
M84.4Pathological fracture, not elsewhere classified
S81Open wound of knee and lower leg

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead S82.66

16 child codes. Green means billable.