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S42.326K

✓ Billable

Nondisplaced transverse fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with nonunion

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

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

S42
  • • traumatic amputation of shoulder and upper arm (S48.-)

⚠️ Excludes2

inherited

Rules inherited from parent codes.

S42.3
  • • physeal fractures of upper end of humerus (S49.0-)
  • • physeal fractures of lower end of humerus (S49.1-)
S42
  • • periprosthetic fracture around internal prosthetic shoulder joint (M97.3)

Clinical Description

ICD-10-CM code S42.326K represents nondisplaced transverse fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with nonunion. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 8-character code at the 7th level of specificity. This is the most specific code available in this subcategory. Coders should note that S42.326K has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code S42.326K?

ICD-10-CM code S42.326K is "Nondisplaced transverse fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with nonunion". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is S42.326K a billable ICD-10 code?

Yes, S42.326K is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with S42.326K?

S42.326K has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Can S42.326K be coded with other codes?

S42.326K has 3 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in S42.326

Other codes in the same category that may be relevant for differential coding:

S42.326ANondisplaced transverse fracture of shaft of humerus, unspecified arm, initial encounter for closed fractureS42.326BNondisplaced transverse fracture of shaft of humerus, unspecified arm, initial encounter for open fractureS42.326DNondisplaced transverse fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with routine healingS42.326GNondisplaced transverse fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with delayed healingS42.326PNondisplaced transverse fracture of shaft of humerus, unspecified arm, subsequent encounter for fracture with malunionS42.326SNondisplaced transverse fracture of shaft of humerus, unspecified arm, sequela

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Code Information

CodeS42.326K
BillableYes
ParentS42.326
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes11 rule(s)
Excludes23 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)