ICD-10-CM Code for Closed Fracture of Head of Radius
The ICD-10-CM code for a closed fracture of the head of the radius is S52.121A (for right side), S52.122A (for left side), or S52.129A (for unspecified side), with the "A" indicating initial encounter for closed fracture.
Code Structure and Selection
The ICD-10-CM coding system for radial head fractures follows a specific hierarchical structure:
S52.12: Displaced fracture of head of radius
- S52.121A: Right radius, initial encounter, closed
- S52.122A: Left radius, initial encounter, closed
- S52.129A: Unspecified side, initial encounter, closed
S52.13: Nondisplaced fracture of head of radius (if applicable)
- S52.131A: Right radius, initial encounter, closed
- S52.132A: Left radius, initial encounter, closed
- S52.139A: Unspecified side, initial encounter, closed
Key Coding Considerations
Laterality is required - You must specify right (1), left (2), or unspecified (9) as the 6th character. Avoid using "unspecified" codes when laterality is documented, as this reduces data quality for surveillance purposes 1.
Encounter type matters - The 7th character extension indicates:
- A: Initial encounter for closed fracture (first treatment)
- D: Subsequent encounter for routine healing
- G: Subsequent encounter for delayed healing
- K: Subsequent encounter for nonunion
- P: Subsequent encounter for malunion
- S: Sequela (late effect)
Common Pitfalls to Avoid
Do not default to unspecified codes when specific information is available. Medical coders frequently use unspecified codes due to time pressure or incomplete documentation, which compromises data accuracy 2. Always document:
- Specific side (right vs. left)
- Displacement status
- Open vs. closed fracture
- Encounter type
Distinguish radial head from radial neck or shaft - The radial head is specifically coded under S52.12x, while radial neck fractures use S52.13x and shaft fractures use different codes entirely.
Ensure the principal diagnosis reflects the reason for encounter - For injury surveillance purposes, the injury code must be the principal diagnosis with appropriate encounter type information 1.
The ICD-10-CM system provides significantly more specificity than ICD-9-CM, allowing for better injury surveillance and outcome tracking 3. Proper coding facilitates accurate epidemiological analysis and quality improvement initiatives for these common injuries.