S62.643D Nondisplaced fracture of proximal phalanx of left middle finger, subsequent encounter for fracture with routine healing

ICD-10-CM Code S62.643D: Nondisplaced Fracture of Proximal Phalanx of Left Middle Finger, Subsequent Encounter for Routine Healing

ICD-10-CM code S62.643D identifies a nondisplaced fracture of the proximal phalanx of the left middle finger during a subsequent encounter for fracture with routine healing. This active terminology record classifies the concept as an injury or poisoning, providing specific laterality and encounter status for medical documentation. 1 3

Plain-language overview

Code S62.643D describes a subsequent medical encounter for a broken left middle finger bone that is healing normally, specifically involving the bone segment nearest the hand. 1

What this code represents

The official label for S62.643D is a nondisplaced fracture of the proximal phalanx of the left middle finger, subsequent encounter for fracture with routine healing. 1 3

This specific code is a narrower concept derived from the parent code S62.643, which denotes a nondisplaced fracture of the proximal phalanx of the left middle finger. 1 4

Coding details

The terminology record for S62.643D includes an abbreviation specifying the left middle finger and a seventh character, indicating the encounter and healing status. 1

Code S62.643D is distinct from a code for delayed healing, as billing references list a separate adjacent code for nondisplaced proximal phalanx fractures of the left middle finger with delayed healing. 6

Clinical context

The index, long, ring, and small fingers each contain a proximal, middle, and distal phalanx, whereas the thumb contains only a proximal and distal phalanx. 2

Proximal phalanx fractures involve surrounding tendons lying close to the periosteum, creating a susceptibility to adhesions and stiffness during the healing process. 5

Documentation considerations

The official terminology label for S62.643D explicitly incorporates the left middle finger, the proximal phalanx, the nondisplaced fracture status, and the routine healing phase. 1

What the sources add

While terminology records define the exact injury and encounter status, clinical literature adds that phalanx fractures generally heal well with either conservative or surgical treatment. 1 2

Sources

1. ICD-10-CM S62.643D terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
4. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
5. Phalangeal Fractures Treatment & Management — emedicine.medscape.com; accessed 2026-07-27.
6. Medical Billing Code Search — app.drchrono.com; accessed 2026-07-27.