R73.03 — Prediabetes

R73.03

ICD-10 Chapter 18: Symptoms, Signs & Abnormal Findings — illustrative image — Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99) — illustrative image

What this code means

Prediabetes means blood glucose is above normal but not yet in the diabetes range, raising future diabetes risk.

Also called: prediabetes, impaired glucose regulation.

When this code is used

Used for prediabetes.

Where it sits in ICD-10-CM

Code R73.03 belongs to Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, which covers codes R00–R99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

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Frequently asked questions

What is ICD-10-CM code R73.03?

R73.03 is the ICD-10-CM diagnosis code for “Prediabetes”. Prediabetes means blood glucose is above normal but not yet in the diabetes range, raising future diabetes risk.

When is code R73.03 used?

Used for prediabetes. It belongs to Chapter 18 of ICD-10-CM (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.