ICDcodes.org
FY2027

S42.21 — Unspecified fracture of surgical neck of humerus

Not billable

Is S42.21 billable?

No — S42.21 is a non-billable header code. S42.21 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 42 billable codes beneath S42.21.

Billable codes under this header

S42.21 at a glance

CodeS42.21
DescriptionUnspecified fracture of surgical neck of humerus
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

How is S42.21 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to S42.21. They show the wording a clinician may have documented, which often differs from the Tabular description.

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

Inclusion terms

Alternative wording in documentation that is classified to S42.21.

  • Fracture of neck of humerus NOS

Excludes1 — never code together — inherited from S42

The conditions below can never be reported together with S42.21 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

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

Use additional code — inherited from Chapter 19

Report an additional code alongside S42.21 to fully describe the condition. S42.21 is sequenced first.

  • code to identify any retained foreign body, if applicable (Z18.-)

Excludes2 — not included here — inherited from Chapter 19

The conditions below are not part of S42.21, but a patient may have both at the same time. When documentation supports it, S42.21 and the excluded code may both be reported.

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)

Excludes2 — not included here — inherited from S40-S49

The conditions below are not part of S42.21, but a patient may have both at the same time. When documentation supports it, S42.21 and the excluded code may both be reported.

  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • injuries of elbow (S50-S59)
  • insect bite or sting, venomous (T63.4)

Excludes2 — not included here — inherited from S42

The conditions below are not part of S42.21, but a patient may have both at the same time. When documentation supports it, S42.21 and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from S42.2

The conditions below are not part of S42.21, but a patient may have both at the same time. When documentation supports it, S42.21 and the excluded code may both be reported.

  • fracture of shaft of humerus (S42.3-)
  • physeal fracture of upper end of humerus (S49.0-)

What codes fall under S42.21? (6)

How long has S42.21 existed?

S42.21 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the S42.2 family? (8)