S52.529P — Torus fracture of lower end of unspecified radius, subsequent encounter for fracture with malunion
Is S52.529P billable?
Yes, but S52.529P will trip a Medicare edit. S52.529P is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, CMS lists S52.529P under Medicare Code Editor edit 20, “Unspecified code” — meaning a code specifying laterality (right, left or bilateral) exists in the same family. On an inpatient claim this triggers the edit, because CMS holds that there are very limited circumstances in which laterality cannot be documented.
S52.529P at a glance
| Code | S52.529P |
|---|---|
| Description | Torus fracture of lower end of unspecified radius, subsequent encounter for fracture with malunion |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "P" | subsequent encounter for fracture with malunion |
What does the 7th character "P" mean in S52.529P?
In S52.529P, the 7th character P means subsequent encounter for fracture with malunion. The 7th character is required for S52.529P to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
- Ainitial encounter for closed fractureS52.529A
- Dsubsequent encounter for fracture with routine healingS52.529D
- Gsubsequent encounter for fracture with delayed healingS52.529G
- Ksubsequent encounter for fracture with nonunionS52.529K
- Psubsequent encounter for fracture with malunionS52.529P
- SsequelaS52.529S
What Medicare edits apply to S52.529P?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name S52.529P directly.
A code specifying laterality (right, left or bilateral) exists in the same family. CMS holds that there are very limited circumstances in which laterality cannot be documented.
Which MS-DRGs does S52.529P group to?
S52.529P sits in MDC 08 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 564Other Musculoskeletal System and Connective Tissue Diagnoses with MCCmedical
- 565Other Musculoskeletal System and Connective Tissue Diagnoses with CCmedical
- 566Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCCmedical
As a secondary diagnosis, S52.529P is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is S52.529P listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S52.52, the nearest indexed parent of S52.529P. Use them to find the family, then select the specific code.
- Fracture, traumatic › radius › lower end › torus (abduction) (adduction) (separation)
Excludes1 — never code together — inherited from S52
The conditions below can never be reported together with S52.529P 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 forearm (S58.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S52.529P to fully describe the condition. S52.529P 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 S52.529P, but a patient may have both at the same time. When documentation supports it, S52.529P and the excluded code may both be reported.
Excludes2 — not included here — inherited from S50-S59
The conditions below are not part of S52.529P, but a patient may have both at the same time. When documentation supports it, S52.529P and the excluded code may both be reported.
Excludes2 — not included here — inherited from S52
The conditions below are not part of S52.529P, but a patient may have both at the same time. When documentation supports it, S52.529P and the excluded code may both be reported.
Excludes2 — not included here — inherited from S52.5
The conditions below are not part of S52.529P, but a patient may have both at the same time. When documentation supports it, S52.529P and the excluded code may both be reported.
- physeal fractures of lower end of radius (S59.2-)
How long has S52.529P existed?
S52.529P 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.