S72.125K — Nondisplaced fracture of lesser trochanter of left femur, subsequent encounter for closed fracture with nonunion
Is S72.125K billable?
Yes — S72.125K is billable for FY2027. S72.125K is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S72.125K may be submitted for encounters from October 1, 2026 through September 30, 2027.
S72.125K at a glance
| Code | S72.125K |
|---|---|
| Description | Nondisplaced fracture of lesser trochanter of left femur, subsequent encounter for closed fracture with nonunion |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "K" | subsequent encounter for closed fracture with nonunion |
What does the 7th character "K" mean in S72.125K?
In S72.125K, the 7th character K means subsequent encounter for closed fracture with nonunion. The 7th character is required for S72.125K to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
- Ainitial encounter for closed fractureS72.125A
- Binitial encounter for open fracture type I or IIS72.125B
- Cinitial encounter for open fracture type IIIA, IIIB, or IIICS72.125C
- Dsubsequent encounter for closed fracture with routine healingS72.125D
- Esubsequent encounter for open fracture type I or II with routine healingS72.125E
- Fsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healingS72.125F
- Gsubsequent encounter for closed fracture with delayed healingS72.125G
- Hsubsequent encounter for open fracture type I or II with delayed healingS72.125H
- Jsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healingS72.125J
- Ksubsequent encounter for closed fracture with nonunionS72.125K
- Msubsequent encounter for open fracture type I or II with nonunionS72.125M
- Nsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunionS72.125N
- Psubsequent encounter for closed fracture with malunionS72.125P
- Qsubsequent encounter for open fracture type I or II with malunionS72.125Q
- Rsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunionS72.125R
- SsequelaS72.125S
Which MS-DRGs does S72.125K group to?
S72.125K sits in MDC 08 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 521Hip Replacement with Principal Diagnosis of Hip Fracture with MCCsurgical
- 522Hip Replacement with Principal Diagnosis of Hip Fracture without MCCsurgical
As a secondary diagnosis, S72.125K is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is S72.125K listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S72.12, the nearest indexed parent of S72.125K. Use them to find the family, then select the specific code.
- Fracture, traumatic › femur, femoral › trochanteric › lesser trochanter (abduction) (adduction) (separation)
- Fracture, traumatic › femur, femoral › trochanteric › lesser trochanter › nondisplaced (abduction) (adduction) (separation)
- Fracture, traumatic › femur, femoral › upper end › trochanteric › lesser (abduction) (adduction) (separation)
- Fracture, traumatic › femur, femoral › upper end › trochanteric › lesser › nondisplaced (abduction) (adduction) (separation)
Excludes1 — never code together — inherited from S72
The conditions below can never be reported together with S72.125K 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 hip and thigh (S78.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S72.125K to fully describe the condition. S72.125K 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 S72.125K, but a patient may have both at the same time. When documentation supports it, S72.125K and the excluded code may both be reported.
Excludes2 — not included here — inherited from S70-S79
The conditions below are not part of S72.125K, but a patient may have both at the same time. When documentation supports it, S72.125K and the excluded code may both be reported.
Excludes2 — not included here — inherited from S72
The conditions below are not part of S72.125K, but a patient may have both at the same time. When documentation supports it, S72.125K and the excluded code may both be reported.
How long has S72.125K existed?
S72.125K 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.