M84.344A Stress fracture, right finger(s), initial encounter for fracture

ICD-10-CM M84.344A: Stress fracture, right finger(s), initial encounter for fracture

ICD-10-CM code M84.344A identifies an initial encounter for a stress fracture of the right finger(s). The terminology record assigns a parent concept of M84.344 and classifies the code as an active pathologic function. A Medicare billing article lists the code alongside subsequent encounter variants for routine healing, delayed healing, malunion, and nonunion. 1 3 4

Plain-language overview

The official label for M84.344A is stress fracture, right finger(s), initial encounter for fracture, and the terminology record lists the code status as active. 1

What this code represents

The code M84.344A represents a stress fracture of the right finger(s) for an initial encounter, and its parent concept in the terminology hierarchy is M84.344. 1

A Medicare billing article identifies M84.344A as the initial encounter for a right finger stress fracture, distinguishing it from M84.344D, the subsequent encounter for routine healing. 3 4

Coding details

The terminology record assigns M84.344A a semantic type of Pathologic Function and indicates it has narrower concepts within the ICD-10-CM terminology. 1

A code tree lists M84.344A among right finger stress fracture variants, including subsequent encounters for delayed healing, malunion, nonunion, and routine healing. 4

Documentation considerations

The official terminology record assigns M84.344A the published abbreviation of stress fracture, right finger(s), init encntr for fracture, and a Medicare article lists the full preferred name. 1 3

Clinical context

A hand therapy guidance document describes rehabilitation after proximal phalanx shaft finger fractures, noting that active movement timing depends on fracture stability from surgical or non-surgical management. 2

What the sources add

The terminology record provides the official code label and hierarchy, whereas the Medicare billing article places the code within a coverage database context alongside subsequent encounter variants. 1 3

Coverage and utilization context

A Medicare billing article for an erythrocyte sedimentation rate test includes M84.344A in a list of diagnosis codes, placing the fracture diagnosis within this specific billing document. 3

Sources

1. ICD-10-CM M84.344A terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Best Practice Guide for Hand Therapy after Proximal ... — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Article - Billing and Coding: Sedimentation Rate, Erythrocyte (A57657) — cms.gov; accessed 2026-07-27.
4. ICD-10-CM 2024 | M84.3 - Stress fracture — unboundmedicine.com; accessed 2026-07-27.