S72.21XC ICD-10-CM Code: Displaced subtrochanteric fracture of right femur, initial encounter for open fracture type IIIA, IIIB, or IIIC
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 521 — HIP REPLACEMENT WITH PRINCIPAL DIAGNOSIS OF HIP FRACTURE WITH MCC (MDC 08)
- MS-DRG 522 — HIP REPLACEMENT WITH PRINCIPAL DIAGNOSIS OF HIP FRACTURE WITHOUT MCC (MDC 08)
- MS-DRG 535 — FRACTURES OF HIP AND PELVIS WITH MCC (MDC 08)
- MS-DRG 536 — FRACTURES OF HIP AND PELVIS WITHOUT MCC (MDC 08)
- MS-DRG 791 — PREMATURITY WITH MAJOR PROBLEMS (MDC 15)
- MS-DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)
- MS-DRG 963 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH MCC (MDC 24)
- MS-DRG 964 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH CC (MDC 24)
- MS-DRG 965 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITHOUT CC/MCC (MDC 24)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Risk Adjustment (CMS-HCC)
Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.
- HCC 402 — Hip Fracture/Dislocation
Other models: CMS-HCC V22 HCC 170
Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S72.21XC in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- traumatic amputation of hip and thigh (S78.-)
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- fracture of lower leg and ankle (S82.-)
- fracture of foot (S92.-)
- periprosthetic fracture of prosthetic implant of hip (M97.0-)
- burns and corrosions (T20-T32)
- frostbite (T33-T34)
- snake bite (T63.0-)
- venomous insect bite or sting (T63.4-)
Frequently Asked Questions (FAQ) & Clinical Guidance
Does S72.21XC require a 7th character?
Yes. The appropriate 7th character is to be added to all codes from category S72.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to S72.21XC in its code family, with their registry titles.
- S72.146S — Nondisplaced intertrochanteric fracture of unspecified femur, sequela
- S72.2 — Subtrochanteric fracture of femur
- S72.21 — Displaced subtrochanteric fracture of right femur
- S72.21XA — Displaced subtrochanteric fracture of right femur, initial encounter for closed fracture
- S72.21XB — Displaced subtrochanteric fracture of right femur, initial encounter for open fracture type I or II
- S72.21XD — Displaced subtrochanteric fracture of right femur, subsequent encounter for closed fracture with routine healing
- S72.21XE — Displaced subtrochanteric fracture of right femur, subsequent encounter for open fracture type I or II with routine healing
- S72.21XF — Displaced subtrochanteric fracture of right femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
- S72.21XG — Displaced subtrochanteric fracture of right femur, subsequent encounter for closed fracture with delayed healing
- S72.21XH — Displaced subtrochanteric fracture of right femur, subsequent encounter for open fracture type I or II with delayed healing