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    OpenPayerBilling CodesOther congenital malformationsICD-10-CM q89-other-congenital-malformations
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    ICD-10-CM Code For Other Congenital Malformations Not Elsewhere Classified: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Q89 includes congenital malformations and anomalies that are not classified elsewhere, encompassing a range of uncommon or anatomically specific birth defects affecting various organs or tissues. These ICD-10-CM diagnosis codes are used to document clinical encounters involving rare or unspecified congenital anomalies, capturing details about affected structures, severity, and associated clinical complexity. Accurate coding within the ICD-10-CM Q89 group supports complete clinical documentation, proper claim adjudication, and appropriate reimbursement.

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    ICD-10-CM Q89: Other Congenital Malformations, Not Elsewhere Classified Overview

    The ICD-10-CM Q89 group contains congenital malformations that are not classified elsewhere and can affect multiple organ systems or specific anatomic structures. These diagnoses represent rare or less well-defined congenital anomalies that do not fit into other congenital malformation categories. Accurate coding matters because it supports complete clinical documentation and appropriate reimbursement for care related to congenital conditions.

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    When to Use

    Use a code from this group when a patient presents with a congenital malformation that does not match more specific congenital anomaly categories in ICD-10-CM. These codes apply when documentation indicates an unspecified, atypical, or rare congenital defect localized to a particular structure or system.

    ICD-10-CM Codes

    10 rows

    ICD-10-CM CodeDescription
    Q89.01Asplenia (congenital)
    Q89.09Congenital malformations of spleen
    Q89.1Congenital malformations of adrenal gland
    Q89.2Congenital malformations of other endocrine glands
    Q89.3Situs inversus
    Q89.4Conjoined twins
    Q89.7Multiple congenital malformations, not elsewhere classified
    Q89.81Kabuki syndrome
    Q89.89Other specified congenital malformations
    Q89.9Congenital malformation, unspecified

    DRG Codes

    15 rows

    DRG CodeDescription
    393Other Digestive System Diagnoses with MCC
    394Other Digestive System Diagnoses with CC
    395Other Digestive System Diagnoses without CC/MCC
    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
    643Endocrine Disorders with MCC
    644Endocrine Disorders with CC
    645Endocrine Disorders without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems
    814Reticuloendothelial and Immunity Disorders with MCC
    815Reticuloendothelial and Immunity Disorders with CC
    816Reticuloendothelial and Immunity Disorders without CC/MCC
    951Other Factors Influencing Health Status

    Typical Clinical Scenarios

    • A newborn is delivered with multiple craniofacial anomalies including micrognathia, cleft palate, and external ear malformations noted on physical exam and referred for genetics and otolaryngology evaluation; the infant is admitted for feeding support and airway assessment, and a congenital malformation code from this group is assigned to capture the unspecified or multiple craniofacial defects when a more specific syndrome code is not appropriate. Typical codes: Q89.1, Q89.9
    • A school-aged child with long-standing, nonprogressive limb length discrepancy and localized congenital deformity of the foot presents to orthopedics for evaluation of gait and consideration of corrective surgery; the team documents an isolated congenital malformation of a limb or extremity not classified elsewhere, prompting assignment of a code from this group to describe the congenital musculoskeletal anomaly as a chronic condition. Typical codes: Q89.3, Q89.9
    • An adult with a known history of a congenital anomaly of the integument discovered incidentally during dermatology consultation for a new skin lesion; the congenital skin malformation is listed as a comorbidity affecting treatment planning and is coded from this group when the anomaly does not fit more specific codes. Typical codes: Q89.81, Q89.9}

    Related Codes

    Q80-CONGENITAL-ICHTHYOSIS

    ICD-10-CM Code For Congenital Ichthyosis: Group Overview

    Q81-EPIDERMOLYSIS-BULLOSA

    ICD-10-CM Code For Epidermolysis Bullosa: Group Overview

    Q82-OTHER-CONGENITAL-MALFORMATIONS-OF-SKIN

    ICD-10-CM Code For Other Congenital Malformations Of Skin: Group Overview

    Q84-OTHER-CONGENITAL-MALFORMATIONS-OF-INTEGUMENT

    ICD-10-CM Code For Other Congenital Malformations Of Integument: Group Overview

    Q85-PHAKOMATOSES-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Phakomatoses Not Elsewhere Classified: Group Overview

    Q86-CONGENITAL-MALFORMATION-SYNDROMES

    ICD-10-CM Code For Congenital Malformation Syndromes Due To Known Exogenous Causes: Group Overview

    Q87-OTHER-SPECIFIED-CONGENITAL-MALFORMATION-SYNDROMES

    ICD-10-CM Code For Other Specified Congenital Malformation Syndromes Affecting Multiple Systems: 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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