R73.01 Impaired fasting glucose

Billable ICD-10-CM code, FY2026.

Applicable to

• Elevated fasting glucose

Applies from R73 Elevated blood glucose level

Excludes1 (never code together)

• diabetes mellitus (E08-E13)
• diabetes mellitus in pregnancy, childbirth and the puerperium (O24.-)
• neonatal disorders (P70.0-P70.2)
• postsurgical hypoinsulinemia (E89.1)

Applies from R73.0 Abnormal glucose

Excludes1 (never code together)

• abnormal glucose in pregnancy (O99.81-)
• diabetes mellitus (E08-E13)
• dysmetabolic syndrome X (E88.81-)
• gestational diabetes (O24.4-)
• glycosuria (R81)
• hypoglycemia (E16.2)
• type 1 diabetes mellitus, presymptomatic (E10.A-)

MS-DRG index

Defines the logic of DRG(s) 640-641 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 790.21 Impaired fasting glucose

Code annotations containing back-references to R73.01

Back-references to R73.0

• Type 2 Excludes: R94.7 Abnormal results of other endocrine function studies ("abnormal glucose (R73.0-)")

Diagnosis Index entries for R73.01

• Elevated, elevation › fasting glucose
• Impaired, impairment (function) › fasting glucose

Nearby codes

• R73 Elevated blood glucose level
• R73.0 Abnormal glucose
• R73.01 Impaired fasting glucose (this code)
• R73.02 Impaired glucose tolerance (oral)
• R73.03 Prediabetes
• R73.09 Other abnormal glucose
• R73.9 Hyperglycemia, unspecified