R73.02 – Impaired glucose tolerance (oral)

ICD-10-CM 2027 diagnosis code · Abnormal findings on examination of blood, without diagnosis

Billable code

ICD-10-CM code R73.02

Code: R73.02 (claims format: R7302)
Description: Impaired glucose tolerance (oral)
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: R70-R79 Abnormal findings on examination of blood, without diagnosis
Parent codes: R73 › R73.0

Notes for R73.02

Applicable to:

Elevated glucose tolerance

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

R73 – Elevated blood glucose level

Excludes1 (not coded here):

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

R73.0 – Abnormal glucose

Excludes1 (not coded here):

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-)

Block R70-R79

Excludes2 (not included here):

abnormal findings on antenatal screening of mother (O28.-)
abnormalities of lipids (E78.-)
abnormalities of platelets and thrombocytes (D69.-)
abnormalities of white blood cells classified elsewhere (D70-D72)
coagulation hemorrhagic disorders (D65-D68)
diagnostic abnormal findings classified elsewhere - see Alphabetical Index
hemorrhagic and hematological disorders of newborn (P50-P61)

Index terms for R73.02

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in R73.0

R73.01 – Impaired fasting glucoseBillable
R73.03 – PrediabetesBillable
R73.09 – Other abnormal glucoseBillable

Frequently asked questions

What is ICD-10 code R73.02?

R73.02 is the ICD-10-CM code for impaired glucose tolerance (oral), in the block R70-R79 (Abnormal findings on examination of blood, without diagnosis).

Is R73.02 a billable code?

Yes. R73.02 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does R73.02 belong to?

It belongs to category R73 – Elevated blood glucose level.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.