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M84.750S ICD-10-CM Code: Atypical femoral fracture, unspecified, sequela

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, Appendix B.

  • MS-DRG 559 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC (MDC 08)
  • MS-DRG 560 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH CC (MDC 08)
  • MS-DRG 561 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT CC/MCC (MDC 08)

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.

Official Registry Overview & Definition

Atypical femoral fracture, unspecified, sequela is a billable ICD-10-CM diagnosis code (M84.750S).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for M84.750S in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • traumatic fracture of bone-see fracture, by site

Change history

  • FY2017 — 2016-10-01
    Added to the code set
    Atypical femoral fracture, unspecified, sequela
    FY2017 changes

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Relationships & Classification

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 3 MS-DRGs: DRG 559 (MDC 08), DRG 560 (MDC 08), DRG 561 (MDC 08).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):MUS020 — Pathological, stress and atypical fractures, sequela (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Pathological, stress and atypical fractures, sequela).

M84.662S — Pathological fracture in other disease, left tibia, sequela, M84.663S — Pathological fracture in other disease, right fibula, sequela, M84.664S — Pathological fracture in other disease, left fibula, sequela, M84.669S — Pathological fracture in other disease, unspecified tibia and fibula, sequela, M84.671S — Pathological fracture in other disease, right ankle, sequela, M84.672S — Pathological fracture in other disease, left ankle, sequela, M84.673S — Pathological fracture in other disease, unspecified ankle, sequela, M84.674S — Pathological fracture in other disease, right foot, sequela, M84.675S — Pathological fracture in other disease, left foot, sequela, M84.676S — Pathological fracture in other disease, unspecified foot, sequela, M84.68XS — Pathological fracture in other disease, other site, sequela, M84.751S — Incomplete atypical femoral fracture, right leg, sequela, M84.752S — Incomplete atypical femoral fracture, left leg, sequela, M84.753S — Incomplete atypical femoral fracture, unspecified leg, sequela, M84.754S — Complete transverse atypical femoral fracture, right leg, sequela, M84.755S — Complete transverse atypical femoral fracture, left leg, sequela, M84.756S — Complete transverse atypical femoral fracture, unspecified leg, sequela, M84.757S — Complete oblique atypical femoral fracture, right leg, sequela, M84.758S — Complete oblique atypical femoral fracture, left leg, sequela, M84.759S — Complete oblique atypical femoral fracture, unspecified leg, sequela, +201 more

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Iron Panel

Contextual Map

Every relationship of M84.750S in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • M00-M99 — Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) (M00-M99) [Hierarchy]
  • M80-M85 — Disorders of bone density and structure [Hierarchy]

Clinical classification (CCSR)

  • MUS020 — Pathological, stress and atypical fractures, sequela [CCSR]

Potential MS-DRG

  • DRG 559 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC [MS-DRG]: “AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC (MDC 08)”
  • DRG 560 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH CC [MS-DRG]: “AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH CC (MDC 08)”
  • DRG 561 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT CC/MCC [MS-DRG]: “AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT CC/MCC (MDC 08)”

MDC crossing · procedures (18508)

  • MDC 08 — Diseases and Disorders of the Musculoskeletal System and Connective Tissue [MDC crossing]: “Diseases and Disorders of the Musculoskeletal System and Connective Tissue — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • 005T0ZZ — Destruction of Spinal Meninges, Open Approach [Same-MDC procedure]: “Destruction of Spinal Meninges, Open Approach — grouped in MDC 08, the procedure side of this code's crossing.” · check together
  • 005T3ZZ — Destruction of Spinal Meninges, Percutaneous Approach [Same-MDC procedure]: “Destruction of Spinal Meninges, Percutaneous Approach — grouped in MDC 08, the procedure side of this code's crossing.” · check together
  • 005T4ZZ — Destruction of Spinal Meninges, Percutaneous Endoscopic Approach [Same-MDC procedure]: “Destruction of Spinal Meninges, Percutaneous Endoscopic Approach — grouped in MDC 08, the procedure side of this code's crossing.” · check together
  • 005W0Z3 — Destruction of Cervical Spinal Cord using Laser Interstitial Thermal Therapy, Open Approach [Same-MDC procedure]: “Destruction of Cervical Spinal Cord using Laser Interstitial Thermal Therapy, Open Approach — grouped in MDC 08, the procedure side of this code's crossing.” · check together
  • 005W0ZZ — Destruction of Cervical Spinal Cord, Open Approach [Same-MDC procedure]: “Destruction of Cervical Spinal Cord, Open Approach — grouped in MDC 08, the procedure side of this code's crossing.” · check together
  • and 18503 more

Nearest codes (40)

  • M84 — Disorder of continuity of bone [Sibling]
  • M84.676D — Pathological fracture in other disease, unspecified foot, subsequent encounter for fracture with routine healing [Sibling]
  • M84.676G — Pathological fracture in other disease, unspecified foot, subsequent encounter for fracture with delayed healing [Sibling]
  • M84.676K — Pathological fracture in other disease, unspecified foot, subsequent encounter for fracture with nonunion [Sibling]
  • M84.676P — Pathological fracture in other disease, unspecified foot, subsequent encounter for fracture with malunion [Sibling]
  • M84.676S — Pathological fracture in other disease, unspecified foot, sequela [Sibling]
  • M84.68 — Pathological fracture in other disease, other site [Sibling]
  • M84.68XA — Pathological fracture in other disease, other site, initial encounter for fracture [Sibling]
  • and 32 more

Change history

  • FY2017 — Added to the code set [Change history]

Frequently Asked Questions (FAQ) & Clinical Guidance

Does M84.750S require a 7th character?

Yes. The appropriate 7th character is to be added to each code from M84.75:.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to M84.750S in its code family, with their registry titles.

  • M84.750A — Atypical femoral fracture, unspecified, initial encounter for fracture
  • M84.750D — Atypical femoral fracture, unspecified, subsequent encounter for fracture with routine healing
  • M84.750G — Atypical femoral fracture, unspecified, subsequent encounter for fracture with delayed healing
  • M84.750K — Atypical femoral fracture, unspecified, subsequent encounter for fracture with nonunion
  • M84.750P — Atypical femoral fracture, unspecified, subsequent encounter for fracture with malunion
  • M84.751 — Incomplete atypical femoral fracture, right leg
  • M84.751A — Incomplete atypical femoral fracture, right leg, initial encounter for fracture
  • M84.751D — Incomplete atypical femoral fracture, right leg, subsequent encounter for fracture with routine healing
  • M84.751G — Incomplete atypical femoral fracture, right leg, subsequent encounter for fracture with delayed healing
  • M84.751K — Incomplete atypical femoral fracture, right leg, subsequent encounter for fracture with nonunion

View all codes in the M84 family