R73.9 Hyperglycemia, unspecified

Billable ICD-10-CM code, FY2026.

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)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 790.29 Other abnormal glucose (approximate)

Code annotations containing back-references to R73.9

Back-references to R73.9

• Type 1 Excludes: E10 Type 1 diabetes mellitus ("hyperglycemia NOS (R73.9)")
• Type 1 Excludes: E89.1 Postprocedural hypoinsulinemia ("transient postprocedural hyperglycemia (R73.9)")
• Type 1 Excludes: R79 Other abnormal findings of blood chemistry ("hyperglycemia NOS (R73.9)")

Diagnosis Index entries for R73.9

• Elevated, elevation › blood sugar
• Findings, abnormal, inconclusive, without diagnosis › blood sugar › high
• Hyperglycemia, hyperglycemic (transient)
• Sugar › blood › high (transient)

Nearby codes

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