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S82.04

Comminuted fracture of patella

Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 10 never code together
S82code
Excludes1
  • traumatic amputation of lower leg (S88.-)S88.-
Excludes2
  • fracture of foot, except ankle (S92.-)S92.-
  • periprosthetic fracture around internal prosthetic ankle joint (M97.2)M97.2
  • periprosthetic fracture around internal prosthetic implant of knee joint (M97.1-)M97.1-
S80-S89block
Excludes2
  • burns and corrosions (T20-T32)T20-T32
  • frostbite (T33-T34)T33-T34
  • injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)S90-S99
  • insect bite or sting, venomous (T63.4)T63.4
S00-T88chapter
Excludes2

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 16
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
Instructional notes 8
S82.0code
Inclusion terms
  • Knee cap
S82code
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
Includes
  • fracture of malleolus
S00-T88chapter
Notes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
  • code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 1
  • Fracture, traumatic (abduction) (adduction) (separation) T14.8
Alongside this code 5 same parent — S82.0
S82.00 Unspecified fracture of patella category S82.01 Osteochondral fracture of patella category S82.02 Longitudinal fracture of patella category S82.03 Transverse fracture of patella category S82.09 Other fracture of patella category
Subordinate codes 6
S82.041 Displaced comminuted fracture of right patella S82.042 Displaced comminuted fracture of left patella S82.043 Displaced comminuted fracture of unspecified patella S82.044 Nondisplaced comminuted fracture of right patella S82.045 Nondisplaced comminuted fracture of left patella S82.046 Nondisplaced comminuted fracture of unspecified patella
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
no
Code set
FY2026
Parent
S82.0
Block
S80-S89
Siblings
5
Subordinate
6

Present FY2024–FY2027.