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R03 Abnormal blood-pressure reading, without diagnosis

ICD-10-CM category R03 sits in Chapter 18 (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, R00-R99). It contains 2 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Billable codes in R03

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

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