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S82.021Non-billableSave

S82.021 - Displaced longitudinal fracture of right patella

ICD-10-CM Chapter 19: Injury, poisoning and certain other consequences of external causes · S80-S89 Injuries to the knee and lower leg (S80-S89) · Subcategory of S82.02 · FY2027

Coding Guidance

S82.021 requires a 7th character. Report the code below that matches the documentation, for example A for initial encounter for closed fracture, B for initial encounter for open fracture type I or II, C for initial encounter for open fracture type IIIA, IIIB, or IIIC.

7th Character

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

Includes, Excludes and Coding Notes

IncludesFrom S82

Conditions this code covers.

  • fracture of malleolus
Excludes 1 — Not Coded HereFrom S82

Mutually exclusive: these conditions are never reported together with this code.

  • traumatic amputation of lower leg (S88.-)
Excludes 2 — Not Included HereFrom S82

Not part of this code; report both codes when the patient has both conditions.

  • 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-)
NotesFrom S82

Instructional notes from the ICD-10-CM tabular list.

  • 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
Excludes 2 — Not Included HereFrom S80-S89 Injuries to the knee and lower leg (S80-S89)

Not part of this code; report both codes when the patient has both conditions.

  • 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)
Excludes 2 — Not Included HereFrom Chapter S00-T88

Not part of this code; report both codes when the patient has both conditions.

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)
Use Additional CodeFrom Chapter S00-T88

Add a secondary code to identify the associated condition or cause when it is documented.

  • code to identify any retained foreign body, if applicable (Z18.-)
NotesFrom Chapter S00-T88

Instructional notes from the ICD-10-CM tabular list.

  • 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.

More Specific Codes (16)

S82.021ADisplaced longitudinal fracture of right patella, initial encounter for closed fracture→S82.021BDisplaced longitudinal fracture of right patella, initial encounter for open fracture type I or II→S82.021CDisplaced longitudinal fracture of right patella, initial encounter for open fracture type IIIA, IIIB, or IIIC→S82.021DDisplaced longitudinal fracture of right patella, subsequent encounter for closed fracture with routine healing→S82.021EDisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type I or II with routine healing→S82.021FDisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing→S82.021GDisplaced longitudinal fracture of right patella, subsequent encounter for closed fracture with delayed healing→S82.021HDisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type I or II with delayed healing→S82.021JDisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing→S82.021KDisplaced longitudinal fracture of right patella, subsequent encounter for closed fracture with nonunion→S82.021MDisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type I or II with nonunion→S82.021NDisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion→S82.021PDisplaced longitudinal fracture of right patella, subsequent encounter for closed fracture with malunion→S82.021QDisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type I or II with malunion→S82.021RDisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion→S82.021SDisplaced longitudinal fracture of right patella, sequela→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with S82.021.