Nondisplaced fracture of medial malleolus of left tibia

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 16 more specific codes instead:

S82.55XA Nondisplaced fracture of medial malleolus of left tibia, initial encounter for closed fracture
S82.55XB Nondisplaced fracture of medial malleolus of left tibia, initial encounter for open fracture type I or II
S82.55XC Nondisplaced fracture of medial malleolus of left tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC
S82.55XD Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for closed fracture with routine healing
S82.55XE Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for open fracture type I or II with routine healing
S82.55XF Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
S82.55XG Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for closed fracture with delayed healing
S82.55XH Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for open fracture type I or II with delayed healing
S82.55XJ Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
S82.55XK Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for closed fracture with nonunion
S82.55XM Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for open fracture type I or II with nonunion
S82.55XN Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
S82.55XP Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for closed fracture with malunion
S82.55XQ Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for open fracture type I or II with malunion
S82.55XR Nondisplaced fracture of medial malleolus of left tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S82.55XS Nondisplaced fracture of medial malleolus of left tibia, sequela

This code requires a seventh character. See the rule below.

What has happened to this code

Every change the publisher made, from 2014 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2014 Added to the draft code set draft Nondisplaced fracture of medial malleolus of left tibia

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from S82 Fracture of lower leg, including ankle

Seventh character required

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

Seventh character values

initial encounter for open fracture NOS

Excludes1 - never coded here

traumatic amputation of lower leg (S88.-)

Excludes2 - not included here

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-)

Includes

fracture of malleolus

Note

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

Inherited from the S80-S89 section Injuries to the knee and lower leg (S80-S89)

Excludes2 - not included here

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)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Fracture, traumatic > tibia > malleolus
Fracture, traumatic > tibia > involving ankle or malleolus
Fracture, traumatic > ankle > medial malleolus
Fracture, traumatic > ankle > medial malleolus > nondisplaced

Codes in the same group

Code	Description	Status
S82.51	Displaced fracture of medial malleolus of right tibia	Not billable
S82.52	Displaced fracture of medial malleolus of left tibia	Not billable
S82.53	Displaced fracture of medial malleolus of unspecified tibia	Not billable
S82.54	Nondisplaced fracture of medial malleolus of right tibia	Not billable
S82.56	Nondisplaced fracture of medial malleolus of unspecified tibia	Not billable