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    OpenPayerBilling CodesAbnormal findings on examination of other body fluids, substances and tissues, without diagnosisICD-10-CM r89-abnormal-findings-in-specimens
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    ICD-10-CM Code For Abnormal Findings In Specimens From Other Organs Systems And Tissues: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group R89 includes nonspecific abnormal findings reported from examination of specimens obtained from organs, systems, and tissues when a definitive diagnosis is not established, such as atypical cells, unusual fluid constituents, or other unexpected laboratory or pathology results. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving abnormal test or specimen findings that may prompt further diagnostic evaluation, monitoring, or referral, capturing aspects of disease severity or organ involvement when a formal diagnosis is pending. Accurate coding within the ICD-10-CM R89 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM R89: Abnormal Findings In Specimens From Other Organs, Systems And Tissues Overview

    This group of diagnosis codes represents abnormal, nonspecific findings identified in specimens taken from organs, body systems, or tissues where no definitive disease diagnosis has been established. The codes capture laboratory or pathology findings that flag unexpected or atypical results from fluids, secretions, or tissue samples. Accurate coding of these findings matters for complete clinical documentation and can affect reimbursement when tying test results to diagnostic workup and medical necessity.

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    When to Use

    Use a code from this group when a specimen examination yields abnormal or atypical results and a definitive diagnosis has not been made or documented. These codes are appropriate for documenting the presence of abnormal findings that may require further evaluation, monitoring, or correlation with clinical context.

    ICD-10-CM Codes

    10 rows

    ICD-10-CM CodeDescription
    R89.0Abnormal level of enzymes in specimens from other organs, systems and tissues
    R89.1Abnormal level of hormones in specimens from other organs, systems and tissues
    R89.2Abnormal level of other drugs, medicaments and biological substances in specimens from other organs, systems and tissues
    R89.3Abnormal level of substances chiefly nonmedicinal as to source in specimens from other organs, systems and tissues
    R89.4Abnormal immunological findings in specimens from other organs, systems and tissues
    R89.5Abnormal microbiological findings in specimens from other organs, systems and tissues
    R89.6Abnormal cytological findings in specimens from other organs, systems and tissues
    R89.7Abnormal histological findings in specimens from other organs, systems and tissues
    R89.8Other abnormal findings in specimens from other organs, systems and tissues
    R89.9Unspecified abnormal finding in specimens from other organs, systems and tissues

    DRG Codes

    6 rows

    DRG CodeDescription
    795Normal Newborn
    867Other Infectious and Parasitic Diseases Diagnoses with MCC
    868Other Infectious and Parasitic Diseases Diagnoses with CC
    869Other Infectious and Parasitic Diseases Diagnoses without CC/MCC
    947Signs and Symptoms with MCC
    948Signs and Symptoms without MCC

    Typical Clinical Scenarios

    • An older adult with progressive cognitive decline undergoes lumbar puncture for evaluation of suspected neurodegenerative disease; cerebrospinal fluid analysis returns an unexplained numeric abnormality in protein concentration without a definitive diagnosis after initial workup, prompting assignment from this group to document the abnormal CSF finding. Typical codes: R89.2
    • A middle-aged patient presents to outpatient oncology clinic for routine tumor marker surveillance after cancer treatment; laboratory testing shows an isolated, unexplained elevation in a serum tumor marker that has not yet been correlated with imaging or biopsy, so a code from this group is used to capture the abnormal specimen result pending further evaluation. Typical codes: R89.6, R89.8
    • A child is seen in the emergency department after acute onset of bloody diarrhea; stool studies return a positive occult blood test or abnormal microscopic examination indicating an abnormal finding in the specimen, but no definitive infectious organism is identified on initial testing, leading to assignment of a code from this group to record the abnormal stool specimen. Typical codes: R89.3, R89.9

    Related Codes

    R83-ABNORMAL-FINDINGS-CEREBROSPINAL-FLUID

    ICD-10-CM Code For Abnormal Findings In Cerebrospinal Fluid: Group Overview

    R84-ABNORMAL-RESPIRATORY-SPECIMEN-FINDINGS

    ICD-10-CM Code For Abnormal Findings In Specimens From Respiratory Organs And Thorax: Group Overview

    R85-ABNORMAL-FINDINGS-DIGESTIVE-ORGANS

    ICD-10-CM Code For Abnormal Findings In Specimens From Digestive Organs And Abdominal Cavity: Group Overview

    R86-ABNORMAL-FINDINGS-MALE-GENITAL-ORGANS

    ICD-10-CM Code For Abnormal Findings In Specimens From Male Genital Organs: Group Overview

    R87-ABNORMAL-FINDINGS-FEMALE-GENITAL

    ICD-10-CM Code For Abnormal Findings In Specimens From Female Genital Organs: Group Overview

    R88-ABNORMAL-FINDINGS-IN-BODY-FLUIDS

    ICD-10-CM Code For Abnormal Findings In Other Body Fluids And Substances: 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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