M84.40XS vs S12
M84.40XS (Pathological fracture, unspecified site, sequela) compared with S12 (Fracture of cervical vertebra and other parts of neck), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. M84.40XS carries an Excludes1 note covering S12: “traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| M84.40XSPathological fracture, unspecified site, sequela | S12Fracture of cervical vertebra and other parts of neck | |
|---|---|---|
| Billing status | Billable | Non-billable header Report instead: S12.000A, S12.000B, S12.000D, S12.000G, S12.000K |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Pathological fracture, unspecified site, sequela is a billable ICD-10-CM diagnosis code (M84.40S). | Fracture of cervical vertebra and other parts of neck is a non-billable ICD-10-CM category code (S12). |
| 7th character | The appropriate 7th character is to be added to each code from subcategory M84.4: | The appropriate 7th character is to be added to all codes from subcategories S12.0-S12.6 |
| Includes | — | fracture of cervical neural arch fracture of cervical spine fracture of cervical spinous process fracture of cervical transverse process |
| Code first | — | any associated cervical spinal cord injury (S14.0, S14.1-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources