R82.8 – Abnormal findings on cytological and histological examination of urine

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

Non-billable header

ICD-10-CM code R82.8

Code: R82.8 (claims format: R828)
Description: Abnormal findings on cytological and histological examination of urine
Short description: Abnormal findings on cytolog and histolog exam of urine
Billable: No – use a more specific code below
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: R80-R82 Abnormal findings on examination of urine, without diagnosis
Parent codes: R82

Billable codes under R82.8

R82.8 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

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

R82 – Other and unspecified abnormal findings in urine

Includes:

chromoabnormalities in urine

Excludes2 (not included here):

hematuria (R31.-)

Use additional code:

code to identify any retained foreign body, if applicable (Z18.-)

Block R80-R82

Excludes1 (not coded here):

abnormal findings on antenatal screening of mother (O28.-)
diagnostic abnormal findings classified elsewhere - see Alphabetical Index
specific findings indicating disorder of amino-acid metabolism (E70-E72)
specific findings indicating disorder of carbohydrate metabolism (E73-E74)

Related codes in R82

R82.0 – ChyluriaBillable
R82.1 – MyoglobinuriaBillable
R82.2 – BiliuriaBillable
R82.3 – HemoglobinuriaBillable
R82.4 – AcetonuriaBillable
R82.5 – Elevated urine levels of drugs, medicaments and biological substancesBillable
R82.6 – Abnormal urine levels of substances chiefly nonmedicinal as to sourceBillable
R82.7 – Abnormal findings on microbiological examination of urineHeader
R82.9 – Other and unspecified abnormal findings in urineHeader

Frequently asked questions

What is ICD-10 code R82.8?

R82.8 is the ICD-10-CM code for abnormal findings on cytological and histological examination of urine, in the block R80-R82 (Abnormal findings on examination of urine, without diagnosis).

Is R82.8 a billable code?

No. R82.8 is a header code with more specific child codes; report one of the billable codes listed above.

What category does R82.8 belong to?

It belongs to category R82 – Other and unspecified abnormal findings in urine.

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.