R73.0
Non-Billable

Abnormal glucose

Non-Billable / Non-Specific Code

What is Abnormal glucose?

ICD-10-CM R73.0 is the diagnosis code for Abnormal glucose. This code falls under the section "Abnormal findings on examination of blood, without diagnosis" within Chapter 18 — Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

⛔ Excludes1

Coding Guidelines for R73.0

⛔ Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as R73.0. They are mutually exclusive:

  • 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-)

ICD-10-CM Code Hierarchy

Understanding where R73.0 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 4 entries
R73.01Impaired fasting glucoseBillableR73.02Impaired glucose tolerance (oral)BillableR73.03PrediabetesBillableR73.09Other abnormal glucoseBillable
Related Codes

Frequently Asked Questions

Is R73.0 a billable ICD-10-CM code?

No, R73.0 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does R73.0 mean?

R73.0 is the ICD-10-CM diagnosis code for "Abnormal glucose". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of R73.0?

The parent code of R73.0 is R73 ("Elevated blood glucose level"). R73.0 provides a more specific classification within this category.

What section is R73.0 in?

R73.0 is located in Section R70-R79 — "Abnormal findings on examination of blood, without diagnosis" within Chapter 18 of the ICD-10-CM Tabular List.

What are the sub-codes of R73.0?

R73.0 has 4 sub-code(s) that provide more specific detail: R73.01, R73.02, R73.03, R73.09.

When should I use R73.0?

Use R73.0 when the patients documented diagnosis matches "Abnormal glucose" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Abnormal glucose?

The ICD-10-CM code for Abnormal glucose is R73.0.

Can R73.0 be used for primary diagnosis?

No, R73.0 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is R73.0 in?

R73.0 is in Chapter 18 of the ICD-10-CM Tabular List.

What conditions are excluded from R73.0?

Type 1 Excludes for R73.0 include: abnormal glucose in pregnancy (O99.81-); diabetes mellitus (E08-E13); dysmetabolic syndrome X (E88.81-) and more.

Is R73.0 valid for 2026?

Yes, R73.0 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousR73Elevated blood glucose levelNext →R73.01Impaired fasting glucose
Code Details
R73.0
Abnormal glucose
Non-Billable / Non-Specific Code
18 — Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R70-R79 — Abnormal findings on examination of blood, without diagnosis
2026 ICD-10-CM