M84.439

⚠ Non-billable (Header)

Pathological fracture, unspecified ulna and radius

Diseases of the musculoskeletal system and connective tissue (M00-M99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

M84.4

• collapsed vertebra NEC (M48.5)
• pathological fracture in neoplastic disease (M84.5-)
• pathological fracture in osteoporosis (M80.-)
• pathological fracture in other disease (M84.6-)
• stress fracture (M84.3-)
• traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)

⚠️ Excludes2

inherited

Rules inherited from parent codes.

M84.4

• personal history of (healed) pathological fracture (Z87.311)

M84

• traumatic fracture of bone-see fracture, by site

Child Codes (6)

M84.439APathological fracture, unspecified ulna and radius, initial encounter for fracture✓ Billable M84.439DPathological fracture, unspecified ulna and radius, subsequent encounter for fracture with routine healing✓ Billable M84.439GPathological fracture, unspecified ulna and radius, subsequent encounter for fracture with delayed healing✓ Billable M84.439KPathological fracture, unspecified ulna and radius, subsequent encounter for fracture with nonunion✓ Billable M84.439PPathological fracture, unspecified ulna and radius, subsequent encounter for fracture with malunion✓ Billable M84.439SPathological fracture, unspecified ulna and radius, sequela✓ Billable

Clinical Description

ICD-10-CM code M84.439 represents pathological fracture, unspecified ulna and radius. This code falls under the Diseases of the musculoskeletal system and connective tissue (M00-M99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 7-character code at the 6th level of specificity. There are 6 more specific child codes under M84.439. Coders should note that M84.439 has 6 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code M84.439?

ICD-10-CM code M84.439 is "Pathological fracture, unspecified ulna and radius". It belongs to the category: Diseases of the musculoskeletal system and connective tissue (M00-M99).

Is M84.439 a billable ICD-10 code?

No, M84.439 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with M84.439?

M84.439 has 6 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Can M84.439 be coded with other codes?

M84.439 has 2 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in M84.43

Other codes in the same category that may be relevant for differential coding:

M84.431Pathological fracture, right ulna M84.432Pathological fracture, left ulna M84.433Pathological fracture, right radius M84.434Pathological fracture, left radius

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Code Information

CodeM84.439

BillableNo — Header code

ParentM84.43

CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)

Excludes16 rule(s)

Excludes22 note(s)

Child codes6

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)