Non-Billable / Non-Specific Code
ICD-10-CM R92.31 is the diagnosis code for Mammographic fatty tissue density of breast. This code falls under the section "Abnormal findings on diagnostic imaging and in function studies, 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.
Understanding where R92.31 sits in the ICD-10-CM classification helps ensure proper coding:
No, R92.31 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
R92.31 is the ICD-10-CM diagnosis code for "Mammographic fatty tissue density of breast". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of R92.31 is R92.3 ("Mammographic density found on imaging of breast"). R92.31 provides a more specific classification within this category.
R92.31 is located in Section R90-R94 — "Abnormal findings on diagnostic imaging and in function studies, without diagnosis" within Chapter 18 of the ICD-10-CM Tabular List.
R92.31 has 3 sub-code(s) that provide more specific detail: R92.311, R92.312, R92.313.
Use R92.31 when the patients documented diagnosis matches "Mammographic fatty tissue density of breast" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Mammographic fatty tissue density of breast is R92.31.
No, R92.31 is non-billable. Use a more specific sub-code for primary diagnosis billing.
R92.31 is in Chapter 18 of the ICD-10-CM Tabular List.
Yes, R92.31 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.