`S82.042B` Displaced comminuted fracture of left patella, initial encounter for open fracture type I or II

Billable ICD-10-CM code, FY2026.

Built from S82.042 with 7th character B (initial encounter for open fracture type I or II).

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-)

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

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

Code annotations containing back-references to S82.042B

Type 2 Excludes: M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")
Type 1 Excludes: M84.3 Stress fracture ("traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)")
Type 1 Excludes: M84.4 Pathological fracture, not elsewhere classified ("traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)")
Type 2 Excludes: S72 Fracture of femur ("fracture of lower leg and ankle (S82.-)")
Type 1 Excludes: S81 Open wound of knee and lower leg ("open fracture of knee and lower leg (S82.-)")
Type 2 Excludes: S92 Fracture of foot and toe, except ankle ("fracture of ankle (S82.-)")
Type 2 Excludes: S92 Fracture of foot and toe, except ankle ("fracture of malleolus (S82.-)")

S82.041Q Displaced comminuted fracture of right patella, subsequent encounter for open fracture type I or II with malunion
S82.041R Displaced comminuted fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S82.041S Displaced comminuted fracture of right patella, sequela
S82.042 Displaced comminuted fracture of left patella
S82.042A Displaced comminuted fracture of left patella, initial encounter for closed fracture
S82.042B Displaced comminuted fracture of left patella, initial encounter for open fracture type I or II (this code)
S82.042C Displaced comminuted fracture of left patella, initial encounter for open fracture type IIIA, IIIB, or IIIC
S82.042D Displaced comminuted fracture of left patella, subsequent encounter for closed fracture with routine healing
S82.042E Displaced comminuted fracture of left patella, subsequent encounter for open fracture type I or II with routine healing
S82.042F Displaced comminuted fracture of left patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
S82.042G Displaced comminuted fracture of left patella, subsequent encounter for closed fracture with delayed healing