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ICD-10-CM · FY 2026 APRIL UPDATE

M84.66

Pathological fracture in other disease, tibia and 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
M84.661Pathological fracture in other disease, right tibiaCategory
M84.661APathological fracture in other disease, right tibia, initial encounter for fractureBillable
M84.661DPathological fracture in other disease, right tibia, subsequent encounter for fracture with routine healingBillable
M84.661GPathological fracture in other disease, right tibia, subsequent encounter for fracture with delayed healingBillable
M84.661KPathological fracture in other disease, right tibia, subsequent encounter for fracture with nonunionBillable
M84.661PPathological fracture in other disease, right tibia, subsequent encounter for fracture with malunionBillable
M84.661SPathological fracture in other disease, right tibia, sequelaBillable
M84.662Pathological fracture in other disease, left tibiaCategory
M84.662APathological fracture in other disease, left tibia, initial encounter for fractureBillable
M84.662DPathological fracture in other disease, left tibia, subsequent encounter for fracture with routine healingBillable
M84.662GPathological fracture in other disease, left tibia, subsequent encounter for fracture with delayed healingBillable
M84.662KPathological fracture in other disease, left tibia, subsequent encounter for fracture with nonunionBillable
M84.662PPathological fracture in other disease, left tibia, subsequent encounter for fracture with malunionBillable
M84.662SPathological fracture in other disease, left tibia, sequelaBillable
M84.663Pathological fracture in other disease, right fibulaCategory
M84.663APathological fracture in other disease, right fibula, initial encounter for fractureBillable
M84.663DPathological fracture in other disease, right fibula, subsequent encounter for fracture with routine healingBillable
M84.663GPathological fracture in other disease, right fibula, subsequent encounter for fracture with delayed healingBillable
M84.663KPathological fracture in other disease, right fibula, subsequent encounter for fracture with nonunionBillable
M84.663PPathological fracture in other disease, right fibula, subsequent encounter for fracture with malunionBillable
M84.663SPathological fracture in other disease, right fibula, sequelaBillable
M84.664Pathological fracture in other disease, left fibulaCategory
M84.664APathological fracture in other disease, left fibula, initial encounter for fractureBillable
M84.664DPathological fracture in other disease, left fibula, subsequent encounter for fracture with routine healingBillable
M84.664GPathological fracture in other disease, left fibula, subsequent encounter for fracture with delayed healingBillable
M84.664KPathological fracture in other disease, left fibula, subsequent encounter for fracture with nonunionBillable
M84.664PPathological fracture in other disease, left fibula, subsequent encounter for fracture with malunionBillable
M84.664SPathological fracture in other disease, left fibula, sequelaBillable
M84.669Pathological fracture in other disease, unspecified tibia and fibulaCategory
M84.669APathological fracture in other disease, unspecified tibia and fibula, initial encounter for fractureBillable

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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.

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