2026 ICD-10-CM Diagnosis Code R92.8Other abnormal and inconclusive findings on diagnostic imaging of breast

ICD-10-CM Codes›R00–R99›R90-R94›R92

ICD-10-CM R92.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R92.8 is a billable ICD-10-CM diagnosis code for other abnormal and inconclusive findings on diagnostic imaging of breast. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 600 through 601. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Abnormal findings without diagnosis.

Code Identity

ICD-10-CM Code
R92.8
Billable Status
Yes — Valid for Submission
Code Describes
Other abnormal and inconclusive findings on diagnostic imaging of breast
Short Description
Oth abn and inconclusive findings on dx imaging of breast
Parent Code
R92
Abnormal and inconclusive findings on diagnostic imaging of breast

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR90-R94Abnormal findings on diagnostic imaging and in function studies, without diagnosis
CategoryR92Abnormal and inconclusive findings on diagnostic imaging of breast
This CodeR92.8Other abnormal and inconclusive findings on diagnostic imaging of breast

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal findings on diagnostic imaging of breast
  • Almost entirely fat breast composition
  • Architectural distortion of breast
  • Asymmetric breast tissue
  • Breast composition
  • Breast neoplasm screening abnormal
  • Decrease in size of lesion of breast since previous mammogram
  • Decreased size
  • Difference in location
  • Difference in margin
  • Difference in opacity
  • Difference in shape
  • Difference in size
  • Difference in spatial proximity
  • Difference in symmetry
  • Digital breast tomosynthesis abnormal
  • Equal density lesion
  • Fat containing lesion
  • Finding less well defined since previous mammogram
  • Finding more defined since previous mammogram
  • Finding partially removed since previous mammogram
  • Focal asymmetric breast tissue
  • High density lesion
  • Increase in size of lesion of breast since previous mammogram
  • Increased size
  • Lesion density modifiers
  • Low density lesion
  • Magnetic resonance imaging of breast abnormal
  • Mammographic mass of bilateral breasts
  • Mammographic mass of breast
  • Mammographic mass of left breast
  • Mammographic mass of right breast
  • Mammographic skin retraction of breast
  • Mammographic skin thickening of breast
  • Mammographic temporal difference finding
  • Mammography abnormal
  • Mammography assessment - high suspicion of malignancy
  • Mammography assessment - known biopsy, proven malignancy
  • Mammography assessment - low suspicion of malignancy
  • Mammography assessment - moderate suspicion of malignancy
  • Mammography assessment - Suspicious abnormality, biopsy should be considered
  • Mammography assessment finding
  • MRI of thorax abnormal
  • New finding since previous mammogram
  • Retraction of skin of breast
  • Scattered fibroglandular densities
  • Tomography - chest abnormal
  • Tomography abnormal
  • Trabecular thickening of breast
  • Ultrasonography of breast abnormal

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Abnormal, abnormality, abnormalities
      • diagnostic imaging
        • breast
    • Abnormal, abnormality, abnormalities
      • mammogram NEC
    • Findings, abnormal, inconclusive, without diagnosis
      • mammogram NEC
    • Findings, abnormal, inconclusive, without diagnosis
      • radiologic (X-ray)
        • breast
    • Findings, abnormal, inconclusive, without diagnosis
      • xerography
    • Inconclusive
      • findings on diagnostic imaging of breast NEC
    • Thermography(abnormal)
      • breast

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM017
Abnormal findings without diagnosis
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Mammography

A mammogram is an x-ray picture of the breast. Health care providers use mammograms to look for early signs of breast cancer that can't be felt during a breast exam. There are two types of mammograms: screening mammograms and diagnostic mammograms.

The full article covers:

  • What is a mammogram?
  • What is a screening mammogram?
  • What is a diagnostic mammogram?
  • How is a mammogram done?
  • What happens if my mammogram is not normal?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert R92.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
793.80 Ab mammogram NOS
Approximate The match is approximate rather than exact.
ICD-9-CM
793.89 Abn finding-breast NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R92.8Overview

Is R92.8 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other abnormal and inconclusive findings on diagnostic imaging of breast on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does R92.8 group to?

When other abnormal and inconclusive findings on diagnostic imaging of breast is the principal diagnosis on an inpatient stay, it groups to MS-DRG 600, 601, with relative weights from 0.6050 to 1.0416 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R92.8 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the other abnormal and inconclusive findings on diagnostic imaging of breast is established, that condition takes the principal position instead.

What is the ICD-9 equivalent of R92.8?

Under the General Equivalence Mappings, other abnormal and inconclusive findings on diagnostic imaging of breast converts to ICD-9-CM 793.80 (ab mammogram NOS) and 793.89 (abn finding-breast NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.