M83.0 vs O91
M83.0 (Puerperal osteomalacia) compared with O91 (Infections of breast associated with pregnancy, the puerperium and lactation), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. O91 carries an Excludes2 note covering M83.0: “puerperal osteomalacia (M83.0)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M83.0Puerperal osteomalacia | O91Infections of breast associated with pregnancy, the puerperium and lactation | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Puerperal osteomalacia is a billable ICD-10-CM diagnosis code (M83.0). | Infections of breast associated with pregnancy, the puerperium and lactation is a non-billable ICD-10-CM category code (O91). |
| Use additional code | — | code to identify infection |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources