ICD-10-CM
ICD-10 code for High blood sugar: R73.9
The CDC title for "High blood sugar" is R73 (Elevated blood glucose level), a header that is not billable. When nothing more specific is documented, the billable code is R73.9, Hyperglycemia, unspecified.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under R73, then other CDC titles that name hyperglycemia
A header groups codes and is not billed. A billable code is one you can report.
- R73Elevated blood glucose levelHeader
- R73.0Abnormal glucoseHeader
- R73.01Impaired fasting glucoseBillable
- R73.02Impaired glucose tolerance (oral)Billable
- R73.03PrediabetesBillable
- R73.09Other abnormal glucoseBillable
- R73.9Hyperglycemia, unspecifiedBillable
- E08.65Diabetes mellitus due to underlying condition with hyperglycemiaBillable
- E09.65Drug or chemical induced diabetes mellitus with hyperglycemiaBillable
- E10.65Type 1 diabetes mellitus with hyperglycemiaBillable
- E11.65Type 2 diabetes mellitus with hyperglycemiaBillable
- E13.65Other specified diabetes mellitus with hyperglycemiaBillable
Excludes1
Excludes1 means these codes are not reported together.
From R73. A note on a category applies to every code under it.
Related conditions
Related pages
- R73.9 code detailsNotes, nearby codes, CMS-HCC group
- Category R73Every code under it
- Chapter 18Symptoms, signs and abnormal clinical findings
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for High blood sugar?
The CDC title for "High blood sugar" is R73 (Elevated blood glucose level), a header that is not billable. When nothing more specific is documented, the billable code is R73.9, Hyperglycemia, unspecified.
Is R73.9 billable?
Yes. R73.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to R73.9?
The CDC tabular list gives 4 Excludes1 notes (not coded together) for R73.9 and the categories above it. They are listed on this page.
What chapter is R73.9 in?
Chapter 18. Symptoms, signs and abnormal clinical findings.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.