S42.241G 4-part fracture of surgical neck of right humerus, subsequent encounter for fracture with delayed healing

ICD-10-CM S42.241G: 4-part fracture of surgical neck of right humerus, subsequent encounter for fracture with delayed healing

ICD-10-CM code S42.241G identifies a subsequent encounter for a right surgical neck humerus fracture experiencing delayed healing. The surgical neck is the narrow humeral portion distal to the tubercles. Clinical literature defines delayed union as fracture healing occurring four to six months after the initial injury. 1 2

Plain-language overview

This diagnosis code represents a four-part fracture of the surgical neck of the right humerus during a subsequent encounter for fracture with delayed healing. 1

What this code represents

The terminology record classifies S42.241G with the semantic type of Injury or Poisoning and establishes its preferred name as a four-part fracture of the surgical neck of the right humerus, subsequent encounter for fracture with delayed healing. 1

Within the coding hierarchy, this specific diagnosis code is a narrower concept derived from the parent code S42.241, which denotes a four-part fracture of the surgical neck of the right humerus. 1

Clinical context

The surgical neck of the humerus is the narrow portion of the bone located distal to the greater and lesser tubercles, and proximal-third humeral fractures frequently involve this specific anatomical region. 2

Clinical literature defines delayed union as the healing of a fracture occurring four to six months after the initial injury, and lack of callus formation with persistent motion at six weeks predicts nonunion. 2

Documentation considerations

The official terminology record for this diagnosis provides the exact preferred name, abbreviation, and active status, which supply the specific clinical terms available for code assignment. 1

Coverage and utilization context

A Medicare billing and coding article for total shoulder arthroplasty includes the diagnosis code S42.241G within a list of relevant codes, without stating any specific coverage determination. 3

What the sources add

While the terminology record provides the exact code definition and hierarchical status, the clinical reference adds operational context by establishing the anatomical boundaries of the surgical neck and the timeframe for delayed healing. 1 2

The terminology file provides the official diagnostic label for S42.241G, whereas the Medicare billing article lists the same code within a total shoulder arthroplasty policy context. 1 3

Sources

1. ICD-10-CM S42.241G terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Article - Billing and Coding: Total Shoulder Arthroplasty (A59878) — cms.gov; accessed 2026-07-27.
4. Nonoperative — surgeryreference.aofoundation.org; accessed 2026-07-27.