ICD-10-CM 2027
ICD-10 code for Prediabetes
Confirmed by the official ICD-10-CM index entry “prediabetes, prediabetic”. Page updated September 29, 2026.
About coding Prediabetes
The ICD-10-CM code for Prediabetes is R73.03 (Prediabetes). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R73.03.
It is also searched as impaired fasting glucose.
Within R73.0 (abnormal glucose), R73.03 is specifically for Prediabetes. Related codes cover impaired fasting glucose (R73.01), impaired glucose tolerance (oral) (R73.02) and other abnormal glucose (R73.09).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 640 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC, relative weight 1.3395) and DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC, relative weight 0.7865), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Related Prediabetes codes
Common questions about Prediabetes ICD-10 codes
What is the ICD-10 code for Prediabetes?
- R73.03 — Prediabetes. More specific codes apply when the documentation supports them: R73.01, R73.02, R73.09.
What is the ICD-10 code for impaired fasting glucose?
- R73.01 — Impaired fasting glucose.
What is the ICD-10 code for impaired glucose tolerance (oral)?
- R73.02 — Impaired glucose tolerance (oral).
What is the ICD-10 code for other abnormal glucose?
- R73.09 — Other abnormal glucose.
Is R73.03 billable?
- Yes. R73.03 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R73.03 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R73.03 as a principal diagnosis.
Is R73.03 a CC or MCC?
- No. R73.03 is neither a CC nor an MCC under MS-DRG v44.0.