S42.4
Non-Billable

Fracture of lower end of humerus

Non-Billable / Non-Specific Code

What is Fracture of lower end of humerus?

ICD-10-CM S42.4 is the diagnosis code for Fracture of lower end of humerus. This code falls under the section "Injuries to the shoulder and upper arm" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

💡 Inclusions
â„šī¸ Excludes2

Coding Guidelines for S42.4

✅ This Code Includes

  • Fracture of distal end of humerus

â„šī¸ Type 2 Excludes (Code separately if applicable)

The following conditions are not included in S42.4. If the patient has both, code each condition separately:

  • fracture of shaft of humerus (S42.3-)
  • physeal fracture of lower end of humerus (S49.1-)

ICD-10-CM Code Hierarchy

Understanding where S42.4 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 10 entries
S42.40Unspecified fracture of lower end of humerusNon-BillableS42.401Unspecified fracture of lower end of right humerusBillableS42.402Unspecified fracture of lower end of left humerusBillableS42.409Unspecified fracture of lower end of unspecified humerusBillableS42.41Simple supracondylar fracture without intercondylar fracture of humerusNon-BillableS42.411Displaced simple supracondylar fracture without intercondylar fracture of right humerusBillableS42.412Displaced simple supracondylar fracture without intercondylar fracture of left humerusBillableS42.413Displaced simple supracondylar fracture without intercondylar fracture of unspecified humerusBillableS42.414Nondisplaced simple supracondylar fracture without intercondylar fracture of right humerusBillableS42.415Nondisplaced simple supracondylar fracture without intercondylar fracture of left humerusBillableS42.416Nondisplaced simple supracondylar fracture without intercondylar fracture of unspecified humerusBillableS42.42Comminuted supracondylar fracture without intercondylar fracture of humerusNon-BillableS42.421Displaced comminuted supracondylar fracture without intercondylar fracture of right humerusBillableS42.422Displaced comminuted supracondylar fracture without intercondylar fracture of left humerusBillableS42.423Displaced comminuted supracondylar fracture without intercondylar fracture of unspecified humerusBillableS42.424Nondisplaced comminuted supracondylar fracture without intercondylar fracture of right humerusBillableS42.425Nondisplaced comminuted supracondylar fracture without intercondylar fracture of left humerusBillableS42.426Nondisplaced comminuted supracondylar fracture without intercondylar fracture of unspecified humerusBillableS42.43Fracture (avulsion) of lateral epicondyle of humerusNon-BillableS42.431Displaced fracture (avulsion) of lateral epicondyle of right humerusBillableS42.432Displaced fracture (avulsion) of lateral epicondyle of left humerusBillableS42.433Displaced fracture (avulsion) of lateral epicondyle of unspecified humerusBillableS42.434Nondisplaced fracture (avulsion) of lateral epicondyle of right humerusBillableS42.435Nondisplaced fracture (avulsion) of lateral epicondyle of left humerusBillableS42.436Nondisplaced fracture (avulsion) of lateral epicondyle of unspecified humerusBillableS42.44Fracture (avulsion) of medial epicondyle of humerusNon-BillableS42.441Displaced fracture (avulsion) of medial epicondyle of right humerusBillableS42.442Displaced fracture (avulsion) of medial epicondyle of left humerusBillableS42.443Displaced fracture (avulsion) of medial epicondyle of unspecified humerusBillableS42.444Nondisplaced fracture (avulsion) of medial epicondyle of right humerusBillableS42.445Nondisplaced fracture (avulsion) of medial epicondyle of left humerusBillableS42.446Nondisplaced fracture (avulsion) of medial epicondyle of unspecified humerusBillableS42.447Incarcerated fracture (avulsion) of medial epicondyle of right humerusBillableS42.448Incarcerated fracture (avulsion) of medial epicondyle of left humerusBillableS42.449Incarcerated fracture (avulsion) of medial epicondyle of unspecified humerusBillableS42.45Fracture of lateral condyle of humerusNon-BillableS42.451Displaced fracture of lateral condyle of right humerusBillableS42.452Displaced fracture of lateral condyle of left humerusBillableS42.453Displaced fracture of lateral condyle of unspecified humerusBillableS42.454Nondisplaced fracture of lateral condyle of right humerusBillableS42.455Nondisplaced fracture of lateral condyle of left humerusBillableS42.456Nondisplaced fracture of lateral condyle of unspecified humerusBillableS42.46Fracture of medial condyle of humerusNon-BillableS42.461Displaced fracture of medial condyle of right humerusBillableS42.462Displaced fracture of medial condyle of left humerusBillableS42.463Displaced fracture of medial condyle of unspecified humerusBillableS42.464Nondisplaced fracture of medial condyle of right humerusBillableS42.465Nondisplaced fracture of medial condyle of left humerusBillableS42.466Nondisplaced fracture of medial condyle of unspecified humerusBillableS42.47Transcondylar fracture of humerusNon-BillableS42.471Displaced transcondylar fracture of right humerusBillableS42.472Displaced transcondylar fracture of left humerusBillableS42.473Displaced transcondylar fracture of unspecified humerusBillableS42.474Nondisplaced transcondylar fracture of right humerusBillableS42.475Nondisplaced transcondylar fracture of left humerusBillableS42.476Nondisplaced transcondylar fracture of unspecified humerusBillableS42.48Torus fracture of lower end of humerusNon-BillableS42.481Torus fracture of lower end of right humerusBillableS42.482Torus fracture of lower end of left humerusBillableS42.489Torus fracture of lower end of unspecified humerusBillableS42.49Other fracture of lower end of humerusNon-BillableS42.491Other displaced fracture of lower end of right humerusBillableS42.492Other displaced fracture of lower end of left humerusBillableS42.493Other displaced fracture of lower end of unspecified humerusBillableS42.494Other nondisplaced fracture of lower end of right humerusBillableS42.495Other nondisplaced fracture of lower end of left humerusBillableS42.496Other nondisplaced fracture of lower end of unspecified humerusBillable
Related Codes

Frequently Asked Questions

Is S42.4 a billable ICD-10-CM code?

No, S42.4 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does S42.4 mean?

S42.4 is the ICD-10-CM diagnosis code for "Fracture of lower end of humerus". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of S42.4?

The parent code of S42.4 is S42 ("Fracture of shoulder and upper arm"). S42.4 provides a more specific classification within this category.

What section is S42.4 in?

S42.4 is located in Section S40-S49 — "Injuries to the shoulder and upper arm" within Chapter 19 of the ICD-10-CM Tabular List.

What are the sub-codes of S42.4?

S42.4 has 10 sub-code(s) that provide more specific detail: S42.40, S42.41, S42.42, S42.43, S42.44 and more.

When should I use S42.4?

Use S42.4 when the patients documented diagnosis matches "Fracture of lower end of humerus" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Fracture of lower end of humerus?

The ICD-10-CM code for Fracture of lower end of humerus is S42.4.

Can S42.4 be used for primary diagnosis?

No, S42.4 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is S42.4 in?

S42.4 is in Chapter 19 of the ICD-10-CM Tabular List.

Is S42.4 valid for 2026?

Yes, S42.4 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousS42.399Other fracture of shaft of unspecified humerusNext →S42.40Unspecified fracture of lower end of humerus
Code Details
S42.4
Fracture of lower end of humerus
Non-Billable / Non-Specific Code
19 — Injury, poisoning and certain other consequences of external causes (S00-T88)
S40-S49 — Injuries to the shoulder and upper arm
2026 ICD-10-CM