Back to ICD-10 library
ICD-10-CM · FY 2026 APRIL UPDATE

S82.66

Nondisplaced fracture of lateral malleolus of unspecified fibula

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
S82.66XANondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for closed fractureBillable
S82.66XBNondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for open fracture type I or IIBillable
S82.66XCNondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for open fracture type IIIA, IIIB, or IIICBillable
S82.66XDNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for closed fracture with routine healingBillable
S82.66XENondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type I or II with routine healingBillable
S82.66XFNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healingBillable
S82.66XGNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for closed fracture with delayed healingBillable
S82.66XHNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type I or II with delayed healingBillable
S82.66XJNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healingBillable
S82.66XKNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for closed fracture with nonunionBillable
S82.66XMNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type I or II with nonunionBillable
S82.66XNNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunionBillable
S82.66XPNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for closed fracture with malunionBillable
S82.66XQNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type I or II with malunionBillable
S82.66XRNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunionBillable
S82.66XSNondisplaced fracture of lateral malleolus of unspecified fibula, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.