Elevated blood glucose level (R73) ICD-10-CM
The R73 code range covers elevated blood glucose level with 7 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the R73 Range 7 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the R73 range.
Blood Glucose
Glucose in blood.
Hyperglycemia
Abnormally high BLOOD GLUCOSE level.
About the R73 Code Range
ICD-10 codes in the R73 section are used to identify various conditions related to elevated blood glucose levels, ranging from abnormal glucose findings to specific diagnoses like impaired fasting glucose or prediabetes. These codes help categorize glucose abnormalities when diabetes is not formally diagnosed.
This section includes R73 for general elevated blood glucose and extends to more detailed codes such as R73.01 for impaired fasting glucose, also known as impaired fasting glycemia. The code R73.02 covers impaired glucose tolerance detected by oral tests, linked with terms like impaired glucose tolerance test and related metabolic conditions. R73.03 specifies prediabetes, including prediabetes during pregnancy. R73.09 captures other abnormal glucose findings, such as glucose levels outside normal ranges or unstable blood glucose, often noted during glucose tolerance tests. Lastly, R73.9 represents unspecified hyperglycemia, covering various scenarios like drug-induced or steroid-induced hyperglycemia, poor glycemic control, and metabolic stress-related high glucose levels. Medical coders use these codes to report abnormal glucose metabolism findings clearly and accurately in medical records and billing when diabetes is not definitively diagnosed.
Questions About This Page
How many billable codes are in the R73 range?
Of the 7 codes in this range, 5 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the R73 range classify?
The range classifies elevated blood glucose level. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
