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    v1.0.28
    OpenPayerBilling CodesSymptoms and signs involving the circulatory and respiratory systemsICD-10-CM r03-abnormal-blood-pressure-reading
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    ICD-10-CM Code For Abnormal Blood-Pressure Reading Without Diagnosis: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group R03 includes codes for abnormal blood-pressure readings recorded without an established diagnosis of hypertension or hypotension, covering isolated elevated or low measurements and related findings. These ICD-10-CM diagnosis codes are used to document clinical encounters where blood-pressure abnormalities are observed but do not yet meet criteria for a definitive diagnosis, capturing the measurement context and any associated monitoring. Accurate coding within the ICD-10-CM R03 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM R03: Abnormal Blood-Pressure Reading, Without Diagnosis Overview

    The diagnoses in this group represent elevated or decreased blood-pressure readings that have been recorded without a definitive hypertension or hypotension diagnosis. They target the circulatory system and are used when an abnormal measurement is noted but diagnostic criteria for a chronic condition are not established. Accurate coding matters for reimbursement because it documents the clinical concern and supports appropriate visit-level payment and medical necessity.

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    When to Use

    Use a code from this group when a clinician documents an abnormal blood-pressure reading but does not diagnose hypertension or hypotension. These codes apply to encounters where monitoring, evaluation, or follow-up is indicated based on the recorded measurement.

    ICD-10-CM Codes

    2 rows

    ICD-10-CM CodeDescription
    R03.0Elevated blood-pressure reading, without diagnosis of hypertension
    R03.1Nonspecific low blood-pressure reading

    DRG Codes

    3 rows

    DRG CodeDescription
    314Other Circulatory System Diagnoses with MCC
    315Other Circulatory System Diagnoses with CC
    316Other Circulatory System Diagnoses without CC/MCC

    Typical Clinical Scenarios

    • An adult patient with no prior hypertension presents to primary care for an annual physical; office blood-pressure measurements in both arms are repeatedly elevated (e.g., 150/92 mm Hg) but the clinician documents that a formal diagnosis of hypertension is not yet established pending ambulatory or home monitoring and further evaluation. A code from this group is assigned to capture the abnormal blood-pressure readings recorded during the visit. Typical codes: R03.0, R03.1
    • An elderly nursing-home resident with multiple comorbidities has transient low blood-pressure readings (e.g., 88/56 mm Hg) during a routine nursing assessment, causing lightheadedness but no acute end-organ injury; staff notify the primary team and adjust medications pending reassessment. The abnormal low reading is coded to indicate the hypotensive measurement without making a definitive diagnosis of orthostatic hypotension or shock. Typical codes: R03.1
    • A pregnant patient in prenatal clinic notes episodic elevated cuff pressures on repeated visits but has not yet met criteria for chronic hypertension in pregnancy; the clinician documents abnormal blood-pressure readings and plans closer surveillance during pregnancy. The assignment captures the documented abnormal pressures as a reason for increased monitoring without assigning a hypertensive disorder diagnosis. Typical codes: R03.0

    Related Codes

    R00-ABNORMALITIES-OF-HEART-BEAT

    ICD-10-CM Code For Abnormalities Of Heart Beat: Group Overview

    R01-CARDIAC-MURMURS-AND-OTHER-CARDIAC-SOUNDS

    ICD-10-CM Code For Cardiac Murmurs And Other Cardiac Sounds: Group Overview

    R04-HEMORRHAGE-FROM-RESPIRATORY-PASSAGES

    ICD-10-CM Code For Hemorrhage From Respiratory Passages: Group Overview

    R05-COUGH

    ICD-10-CM Code For Cough: Group Overview

    R06-ABNORMALITIES-OF-BREATHING

    ICD-10-CM Code For Abnormalities Of Breathing: Group Overview

    R07-PAIN-IN-THROAT-AND-CHEST

    ICD-10-CM Code For Pain In Throat And Chest: Group Overview

    R09-OTHER-SYMPTOMS-AND-SIGNS

    ICD-10-CM Code For Other Symptoms And Signs Involving The Circulatory And Respiratory System: 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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