2026 ICD-10-CM Diagnosis Code R73Elevated blood glucose level

ICD-10-CM Codes›R00–R99›R70-R79›R73

ICD-10-CM R73
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R73 is a non-billable ICD-10-CM category code for elevated blood glucose level, so it cannot be submitted on claims. Use a more specific code from this category instead, such as R73.01, R73.02, R73.03, and R73.09. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established.

Code Identity

ICD-10-CM Code
R73
Billable Status
No — Non-Billable Category
Code Describes
Elevated blood glucose level
Chapter
R70-R79
Abnormal findings on examination of blood, without diagnosis

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR70-R79Abnormal findings on examination of blood, without diagnosis
CategoryR73Elevated blood glucose level
This CodeR73Elevated blood glucose level

Specific Coding for Elevated blood glucose levelOverview

Non-specific codes like R73 require more characters. Use one of these billable codes instead:

  • R73.0 for Abnormal glucose

  • Use R73.01 for Impaired fasting glucose

  • Use R73.02 for Impaired glucose tolerance (oral)

  • Use R73.03 for Prediabetes

  • Use R73.09 for Other abnormal glucose

  • Use R73.9 for Hyperglycemia, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

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

Patient EducationClinical

Blood Glucose

Blood glucose, or blood sugar, is the main sugar found in your blood. It is your body's primary source of energy. It comes from the food you eat. Your body breaks down most of that food into glucose and releases it into your bloodstream. When your blood glucose goes up, it signals your pancreas to release insulin.

The full article covers:

  • What is blood glucose?
  • What is diabetes?
  • What are blood glucose targets?
  • When and how should I check my blood glucose?
  • What happens if my blood glucose level becomes too high?
  • What happens if my blood glucose level becomes low for me?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.