Billable / Specific Code
ICD-10-CM O91.211 is the diagnosis code for Nonpurulent mastitis associated with pregnancy, first trimester. This code falls under the section "Complications predominantly related to the puerperium" within Chapter 15 — Pregnancy, childbirth and the puerperium (O00-O9A). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where O91.211 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, O91.211 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
O91.211 is the ICD-10-CM diagnosis code for "Nonpurulent mastitis associated with pregnancy, first trimester". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of O91.211 is O91.21 ("Nonpurulent mastitis associated with pregnancy"). O91.211 provides a more specific classification within this category.
O91.211 is located in Section O85-O92 — "Complications predominantly related to the puerperium" within Chapter 15 of the ICD-10-CM Tabular List.
Use O91.211 when the patients documented diagnosis matches "Nonpurulent mastitis associated with pregnancy, first trimester" 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 Nonpurulent mastitis associated with pregnancy, first trimester is O91.211.
Yes, O91.211 can be used as a primary diagnosis code since it is billable and specific.
O91.211 is in Chapter 15 of the ICD-10-CM Tabular List.
Yes, O91.211 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.