S82.5Fracture of medial malleolus

S82.5 is the ICD-10-CM diagnosis code for fracture of medial malleolus. It belongs to category S82 (fracture of lower leg, including ankle), block S80-S89 (injuries to the knee and lower leg) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

Within S82 (fracture of lower leg, including ankle), S82.5 is specifically for fracture of medial malleolus. Related codes cover fracture of patella (S82.0), fracture of upper end of tibia (S82.1), fracture of shaft of tibia (S82.2), fracture of lower end of tibia (S82.3), fracture of shaft of fibula (S82.4), fracture of lateral malleolus (S82.6), other fractures of lower leg (S82.8) and unspecified fracture of lower leg (S82.9).

Codes in this range require a 7th character: 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, D for subsequent encounter for closed fracture with routine healing, E for subsequent encounter for open fracture type I or II with routine healing, F for subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing and 10 more. Use placeholder "X" characters to fill any empty positions before the 7th character.

Don't report S82.5 together with the conditions in its Excludes1 note: pilon fracture of distal tibia (S82.87-), Salter-Harris type III of lower end of tibia (S89.13-) and Salter-Harris type IV of lower end of tibia (S89.14-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.