R92.31
⚠ Non-billable
Mammographic fatty tissue density of breast
ICD-10-CM · FY2026 · Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Code
R92.31
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code R92.31?
ICD-10-CM code R92.31 represents Mammographic fatty tissue density of breast. It is a non-billable header code requiring a more specific subcategory in the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter, effective October 1, 2025 – September 30, 2026.
Is R92.31 billable?
No. R92.31 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is R92.31 in?
R92.31 belongs to the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter (R00–R99) of ICD-10-CM.
Related codes in the R92 category
R92
Abnormal and inconclusive findings on diagnostic imaging of breast
Non-billable
R92.0
Mammographic microcalcification found on diagnostic imaging of breast
Billable
R92.1
Mammographic calcification found on diagnostic imaging of breast
Billable
R92.2
Inconclusive mammogram
Billable
R92.3
Mammographic density found on imaging of breast
Non-billable
R92.8
Other abnormal and inconclusive findings on diagnostic imaging of breast
Billable
R92.30
Dense breasts, unspecified
Billable
R92.32
Mammographic fibroglandular density of breast
Non-billable
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