S42.21 Unspecified fracture of surgical neck of humerus

The ICD-10-CM code for Unspecified fracture of surgical neck of humerus is S42.21 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

19: Injury, poisoning and certain other consequences of external causes (S00-T88)

Section

S40-S49: Injuries to the shoulder and upper arm (S40-S49)

Category S42

246 codes (201 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to S42.21:

• Fracture, traumatic (abduction) (adduction) (separation) › humerus › upper end › surgical neck (displaced)
• Fracture, traumatic (abduction) (adduction) (separation) › humerus › upper end › surgical neck (displaced) › nondisplaced

Inclusion Terms

• Fracture of neck of humerus NOS

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool

Cite This Page

Reference S42.21 with the canonical source and edition:

S42.21 — Unspecified fracture of surgical neck of humerus. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/S42.21

Canonical URL: https://icd10codingpro.com/codes/S42.21