S32.42
Fracture of posterior wall of acetabulum
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 10 never code together
S30-S39block
Excludes2
- burns and corrosions (T20-T32)T20-T32
- effects of foreign body in anus and rectum (T18.5)T18.5
- effects of foreign body in genitourinary tract (T19.-)T19.-
- effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)T18.2-T18.4
- frostbite (T33-T34)T33-T34
- insect bite or sting, venomous (T63.4)T63.4
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 6
A initial encounter for closed fracture
B initial encounter for open fracture
D subsequent encounter for fracture with routine healing
G subsequent encounter for fracture with delayed healing
K subsequent encounter for fracture with nonunion
S sequela
Instructional notes 18
S32code
Notes
- A fracture not indicated as displaced or nondisplaced should be coded to displaced
- A fracture not indicated as opened or closed should be coded to closed
Includes
- fracture of lumbosacral neural arch
- fracture of lumbosacral spinous process
- fracture of lumbosacral transverse process
- fracture of lumbosacral vertebra
- fracture of lumbosacral vertebral arch
Code first
- any associated spinal cord and spinal nerve injury (S34.-)S34.-
S30-S39block
Includes
- injuries to the abdominal wall
- injuries to the anus
- injuries to the buttock
- injuries to the external genitalia
- injuries to the flank
- injuries to the groin
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 1
Alongside this code 9 same parent — S32.4
S32.40 Unspecified fracture of acetabulum category S32.41 Fracture of anterior wall of acetabulum category S32.43 Fracture of anterior column [iliopubic] of acetabulum category S32.44 Fracture of posterior column [ilioischial] of acetabulum category S32.45 Transverse fracture of acetabulum category S32.46 Associated transverse-posterior fracture of acetabulum category S32.47 Fracture of medial wall of acetabulum category S32.48 Dome fracture of acetabulum category S32.49 Other specified fracture of acetabulum category
Subordinate codes 6
S32.421 Displaced fracture of posterior wall of right acetabulum S32.422 Displaced fracture of posterior wall of left acetabulum S32.423 Disp fx of posterior wall of unspecified acetabulum S32.424 Nondisplaced fracture of posterior wall of right acetabulum S32.425 Nondisplaced fracture of posterior wall of left acetabulum S32.426 Nondisp fx of posterior wall of unspecified acetabulum
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.