S42Not billable, use a more specific code below

Fracture of shoulder and upper arm

In Injuries to the shoulder and upper arm (S40-S49), chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes

1,398 billable codes under S42: 132 are an MCC, 603 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

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Instructional notes

Excludes1: not coded here, use a different code

  • traumatic amputation of shoulder and upper arm (S48.-)

Excludes2: not included here, code separately if applicable

  • periprosthetic fracture around internal prosthetic shoulder joint (M97.3)

Also applies, from Injuries to the shoulder and upper arm (S40-S49)

These notes sit on S40-S49 and apply to every code under it, including S42.

Includes: conditions that are coded here

  • injuries of axilla
  • injuries of scapular region

Excludes2: not included here, code separately if applicable

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

  • Section I.C.19.c Coding of Traumatic Fractures (page 79), covers S42

    Code fractures by site; default to closed and displaced when not specified. Use initial 7th characters during active treatment and subsequent ones during healing, not aftercare Z codes; use M80 for osteoporotic fractures from minor trauma.

Other Chapter 19 topics:

Read Section I.C.19 (page 77)

Other codes that refer to S42

Notes on these codes point to S42.

  • M84.3 Excludes1: traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)
  • M84.4 Excludes1: traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)
  • S41 Excludes2: open fracture of shoulder and upper arm (S42.- with 7th character B or C)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Fractures

A fracture is a break in a bone. Fractures are usually caused by injuries. Since they can sometimes be serious, it's important to get medical care right away if you think you have a fracture.

Read more about fractures on MedlinePlus

Shoulder Injuries and Disorders

Your shoulder joint is composed of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone). Your shoulders are the most movable joints in your body. They can also be unstable because the ball of the upper arm is larger than the shoulder socket that holds it. To remain in a stable or normal position, the shoulder must be anchored by muscles, tendons, and ligaments.

Read more about shoulder injuries and disorders on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.