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    OpenPayerBilling CodesOther osteopathiesICD-10-CM m88-osteitis-deformans-pagets-disease
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    ICD-10-CM Code For Osteitis Deformans Paget's Disease Of Bone: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group M88 includes diagnoses for osteitis deformans, also known as Paget's disease of bone, covering localized and generalized forms and site-specific manifestations. These ICD-10-CM diagnosis codes are used to document clinical presentations such as bone pain, deformity, pathological fractures, and site-specific complications that reflect disease severity or organ involvement. Accurate coding within the ICD-10-CM M88 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM M88: Osteitis Deformans [Paget's Disease Of Bone] Overview

    The diagnoses in the ICD-10-CM M88 group represent osteitis deformans, commonly known as Paget's disease of bone, a chronic disorder of bone remodeling that can lead to bone pain, deformity, and fracture risk. These codes target the skeletal system and specific sites of involvement when documented. Accurate coding matters for complete clinical documentation and appropriate reimbursement because it captures disease location, complications, and treatment needs.

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    When to Use

    Use a code from this group when Paget's disease of bone is documented as the primary diagnosis, when specific bones are identified, or when complications such as pathological fracture are present. These codes apply to clinical encounters that require documenting disease location, severity, or related sequelae for treatment and billing purposes.

    ICD-10-CM Codes

    26 rows

    ICD-10-CM CodeDescription
    M88.0Osteitis deformans of skull
    M88.1Osteitis deformans of vertebrae
    M88.811Osteitis deformans of right shoulder
    M88.812Osteitis deformans of left shoulder
    M88.819Osteitis deformans of unspecified shoulder
    M88.821Osteitis deformans of right upper arm
    M88.822Osteitis deformans of left upper arm
    M88.829Osteitis deformans of unspecified upper arm
    M88.831Osteitis deformans of right forearm
    M88.832Osteitis deformans of left forearm
    M88.839Osteitis deformans of unspecified forearm
    M88.841Osteitis deformans of right hand
    M88.842Osteitis deformans of left hand
    M88.849Osteitis deformans of unspecified hand
    M88.851Osteitis deformans of right thigh
    M88.852Osteitis deformans of left thigh
    M88.859Osteitis deformans of unspecified thigh
    M88.861Osteitis deformans of right lower leg
    M88.862Osteitis deformans of left lower leg
    M88.869Osteitis deformans of unspecified lower leg

    Showing 1–20 of 26

    DRG Codes

    2 rows

    DRG CodeDescription
    553Bone Diseases and Arthropathies with MCC
    554Bone Diseases and Arthropathies without MCC

    Typical Clinical Scenarios

    • An elderly patient with progressive hearing loss and skull enlargement presents to primary care after family members notice a widening of the forehead and complaints of chronic aching in the jaw and temporal regions. Imaging (skull radiographs or CT) demonstrates thickened, sclerotic, and lytic changes consistent with localized bone remodeling in the cranial vault; biochemical tests may show elevated alkaline phosphatase. A diagnosis from this group is assigned to capture Paget-type bone remodeling limited to the skull. Typical codes: M88.811, M88.812
    • A middle-aged patient reports long-standing deformity and bowing of the femur with chronic hip pain and recent worsening of gait; radiographs show classic mixed lytic and sclerotic changes involving the femur and adjacent pelvis, and the patient is seen for ongoing management and monitoring. Because this is a chronic, progressive osteopathy affecting long bones and pelvis without acute complication, a code from this group reflecting femoral or lower limb involvement is used to document the underlying disease. Typical codes: M88.851, M88.852
    • An older adult arrives to the emergency department after a fall with acute localized pain and inability to bear weight; imaging reveals a pathologic fracture through a pagetic lesion in the proximal femur with marked cortical thinning and bone deformity. The encounter is coded to indicate the underlying pagetic osteopathy as the condition contributing to the pathologic fracture and acute presentation. Typical codes: M88.859, M88.869

    Related Codes

    M86-OSTEOMYELITIS

    ICD-10-CM Code For Osteomyelitis: Group Overview

    M87-OSTEONECROSIS

    ICD-10-CM Code For Osteonecrosis: Group Overview

    M89-OTHER-DISORDERS-OF-BONE

    ICD-10-CM Code For Other Disorders Of Bone: Group Overview

    M90-OSTEOPATHIES-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Osteopathies In Diseases Classified Elsewhere: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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