98941: Chiropractic manipulative treatment, spinal, three to four regions

What 98941 covers

The middle spinal adjustment code, for chiropractic manipulative treatment addressing three or four of the five spinal regions in one visit.

How it works in a chiropractic practice

The most billed CMT code in many practices, and the most audited, precisely because it pays more than 98940 and the difference is documentation. Every region counted needs its own documented subluxation findings and treatment. A full spine check is not four regions of treatment; four regions of documented findings and applied manipulation is.

What the note must show

• ✓Findings and treatment for each of the three or four regions claimed, region by region
• ✓Diagnoses on the claim covering the regions billed, correctly pointed from the service line
• ✓For Medicare, the subluxation requirement and AT modifier, as with all spinal CMT

A worked example

A patient with low back pain also carries documented cervical and thoracic subluxation findings, all three regions adjusted and noted. 98941 is correct. Six months later the cervical complaint has resolved and stopped appearing in the note, but the code never stepped back down to 98940. That drift, region count outliving the findings, is exactly what payer algorithms flag.

Medicare rules

Covered under the same rules as 98940. Region support matters more here: reviewers compare the region count implied by the code against the regions actually documented, visit by visit.

Where practices get burned

Code never stepping down as complaints resolve; identical region counts on every visit for months, which reads as templated rather than clinical; missing per region findings.

General information for billing teams, not legal, coding, or payer specific advice. CPT is a registered trademark of the American Medical Association; code descriptions here are paraphrased in our own words and the AMA's CPT publications control. Payer policies vary and control for any individual claim.