| Code | Description | Required Modifiers |
| M99.01 | Segmental Dysfunction (Cervical) | Link to CPT 98940/98941. |
| M99.03 | Segmental Dysfunction (Lumbar) | Primary code for lower back CMT. |
| M54.50 | Low Back Pain, Unspecified | Always check for 2026 sub-code specificity. |
| M54.2 | Cervicalgia (Neck Pain) | Very common secondary code for medical necessity. |
| M62.830 | Muscle Spasm of Back | Often used to justify therapeutic exercise (97110). |
| R51.9 | Headache, Unspecified | Common for upper cervical adjustments. |
