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    v1.0.28
    OpenPayerBilling CodesCongenital malformations and deformations of the musculoskeletal systemICD-10-CM q72-reduction-defects-of-lower-limb
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    ICD-10-CM Code For Reduction Defects Of Lower Limb: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Q72 includes congenital reduction defects of the lower limb such as transverse and longitudinal deficiencies, partial absence, and related deformities of the leg and foot. These ICD-10-CM diagnosis codes are used to document the anatomic level of deficiency, laterality, and clinical complexity of lower limb reduction anomalies. Accurate coding within the ICD-10-CM Q72 group supports complete clinical documentation and appropriate reimbursement.

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    ICD-10-CM Q72: Reduction Defects Of Lower Limb Overview

    This group of congenital malformations represents reduction defects of the lower limb, including transverse or longitudinal deficiencies and partial or complete absence of bones or segments of the leg, foot, and associated structures. These conditions affect the musculoskeletal system and may impact function, mobility, and need for prosthetic or surgical management. Accurate coding matters for proper clinical documentation and for reimbursement because it captures the specific anatomic level and laterality of the defect.

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    When to Use

    Use a code from this group when a congenital reduction defect of the lower limb has been clinically documented, with specification of the anatomic level and laterality. Codes from this group are selected to reflect the most precise diagnosis available in the medical record for billing and clinical documentation.

    ICD-10-CM Codes

    44 rows

    ICD-10-CM CodeDescription
    Q72.00Congenital complete absence of unspecified lower limb
    Q72.01Congenital complete absence of right lower limb
    Q72.02Congenital complete absence of left lower limb
    Q72.03Congenital complete absence of lower limb, bilateral
    Q72.10Congenital absence of unspecified thigh and lower leg with foot present
    Q72.11Congenital absence of right thigh and lower leg with foot present
    Q72.12Congenital absence of left thigh and lower leg with foot present
    Q72.13Congenital absence of thigh and lower leg with foot present, bilateral
    Q72.20Congenital absence of both lower leg and foot, unspecified lower limb
    Q72.21Congenital absence of both lower leg and foot, right lower limb
    Q72.22Congenital absence of both lower leg and foot, left lower limb
    Q72.23Congenital absence of both lower leg and foot, bilateral
    Q72.30Congenital absence of unspecified foot and toe(s)
    Q72.31Congenital absence of right foot and toe(s)
    Q72.32Congenital absence of left foot and toe(s)
    Q72.33Congenital absence of foot and toe(s), bilateral
    Q72.40Longitudinal reduction defect of unspecified femur
    Q72.41Longitudinal reduction defect of right femur
    Q72.42Longitudinal reduction defect of left femur
    Q72.43Longitudinal reduction defect of femur, bilateral

    Showing 1–20 of 44

    DRG Codes

    3 rows

    DRG CodeDescription
    564Other Musculoskeletal System and Connective Tissue Diagnoses with MCC
    565Other Musculoskeletal System and Connective Tissue Diagnoses with CC
    566Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC

    Typical Clinical Scenarios

    • A newborn delivered at term with an absent lower limb segment and malformed foot detected on initial newborn exam and confirmed by plain radiographs; the infant is referred to pediatric orthopedics for assessment of limb length discrepancy, prosthetic planning, and evaluation for associated congenital anomalies. A congenital reduction defect of the lower extremity is documented as the primary diagnosis because the limb elements are partially absent from birth. Typical codes: Q72.10, Q72.11
    • An adolescent with a history of congenital partial absence of the femur presents for routine orthopedic follow-up and limb-lengthening planning after multiple prior surgical procedures; visits include gait assessment, radiographic follow-up, and discussion of prosthetic adjustments and long-term functional goals. The chronic nature of the congenital reduction deformity of the lower limb is coded to capture the underlying malformation driving ongoing care. Typical codes: Q72.20, Q72.21
    • An adult with a congenital transverse reduction defect of the lower leg presents to the emergency department after a traumatic wound over the residual limb with infection requiring debridement; care focuses on managing the acute infectious complication and coordinating with reconstructive and infectious disease teams. The congenital reduction defect remains an important comorbidity affecting wound healing and surgical planning and is therefore coded alongside the acute diagnoses. Typical codes: Q72.811, Q72.819

    Related Codes

    Q65-CONGENITAL-DEFORMITIES-OF-HIP

    ICD-10-CM Code For Congenital Deformities Of Hip: Group Overview

    Q66-CONGENITAL-DEFORMITIES-OF-FEET

    ICD-10-CM Code For Congenital Deformities Of Feet: Group Overview

    Q67-CONGENITAL-MUSCULOSKELETAL-DEFORMITIES-HEAD-FACE-SPINE-CHEST

    ICD-10-CM Code For Congenital Musculoskeletal Deformities Of Head Face Spine And Chest: Group Overview

    Q68-OTHER-CONGENITAL-MUSCULOSKELETAL-DEFORMITIES

    ICD-10-CM Code For Other Congenital Musculoskeletal Deformities: Group Overview

    Q69-POLYDACTYLY

    ICD-10-CM Code For Polydactyly: Group Overview

    Q70-SYNDACTYLY-CONGENITAL-DIGIT-FUSION

    ICD-10-CM Code For Syndactyly: Group Overview

    Q71-REDUCTION-DEFECTS-OF-UPPER-LIMB

    ICD-10-CM Code For Reduction Defects Of Upper Limb: Group Overview

    Q73-REDUCTION-DEFECTS-OF-UNSPECIFIED-LIMB

    ICD-10-CM Code For Reduction Defects Of Unspecified Limb: Group Overview

    Q74-OTHER-CONGENITAL-MALFORMATIONS-OF-LIMBS

    ICD-10-CM Code For Other Congenital Malformations Of Limb(S): Group Overview

    Q75-OTHER-CONGENITAL-SKULL-FACE-MALFORMATIONS

    ICD-10-CM Code For Other Congenital Malformations Of Skull And Face Bones: Group Overview

    Showing 1–10 of 14

    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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