How to Document Scaling and Root Planing (SRP)

Scaling and root planing (D4341 for four or more teeth per quadrant, D4342 for one to three) is a therapeutic procedure, not a deeper cleaning — and insurers treat it that way. Every SRP claim has to demonstrate medical necessity on its own, quadrant by quadrant, which means the note has to carry more weight than a prophy note ever does. When SRP claims get denied or flagged for audit, it's rarely because the treatment wasn't warranted. It's because the chart doesn't prove it was.

What an SRP note needs to include

• A pre-treatment periodontal diagnosis. Pocket depths and BOP by themselves aren't a diagnosis. The chart needs a stated diagnosis — extent and severity, consistent with current staging language — that the SRP is treating. See our periodontal charting documentation guide for how that diagnosis should be built from the charting data.
• Baseline pocket depths and BOP for the quadrant treated. Specific numbers, not "generalized moderate pockets." Reviewers look for the measurements that justify root planing as opposed to a routine prophylaxis.
• The quadrant(s) treated, clearly identified. SRP is billed and reviewed per quadrant. A note covering multiple quadrants without separating findings and treatment by quadrant makes it hard to verify each one independently.
• Anesthesia used and patient tolerance. Type and amount of local anesthetic, and how the patient tolerated the procedure. This also supports billing for anesthesia separately where applicable.
• Post-op instructions given. Chlorhexidine rinse if prescribed, expected sensitivity, and what to do if symptoms don't resolve as expected.
• A plan for re-evaluation. SRP is expected to be followed by a reassessment, typically at 4-6 weeks, to confirm tissue response and decide whether the patient moves to periodontal maintenance or needs further treatment.

Why SRP claims get denied

SRP sits at an awkward point in insurance review: it costs more than a prophy, it's billed by quadrant so a single visit can generate multiple line items, and the difference between "SRP was necessary" and "this should have been a prophy" lives entirely in the documented pocket depths and diagnosis. Reviewers know this, which is why SRP is disproportionately targeted for both claim denials and post-payment audits compared to most other hygiene procedures.

The recurring pattern behind denials is almost always the same: no baseline pocket depths recorded before treatment, no stated periodontal diagnosis, or identical boilerplate language used across quadrants and across patients. If a payer can't see the numbers that justified root planing over a routine cleaning, they have grounds to deny the claim regardless of whether the treatment was appropriate. For a broader look at how documentation gaps translate into denials, see our piece on insurance claim denials caused by poor documentation.

Example: one quadrant, SRP

Quadrant 3 (teeth #17-21). Pre-treatment pocket depths 5-7mm generalized this quadrant, BOP present at 60% of sites probed, moderate subgingival calculus confirmed on exploration. Diagnosis: localized Stage III periodontitis, quadrant 3. Local anesthesia administered: 1 carpule 2% lidocaine w/ 1:100,000 epinephrine, infiltration and block as needed. Patient tolerated procedure well, no adverse reaction. Scaling and root planing completed #17-21, subgingival and root surface deposits removed, root surfaces planed smooth. Post-op instructions given: expect transient sensitivity to cold and mild tenderness 24-48 hours, chlorhexidine 0.12% rinse prescribed BID x 2 weeks, avoid vigorous rinsing today. Re-evaluation scheduled in 4-6 weeks to assess healing and probing depths; periodontal maintenance to follow if response is favorable.

Every element a reviewer looks for is here: the diagnosis, the numbers that support it, what was done, what anesthesia was used, what the patient was told afterward, and what happens next. That's the difference between a note that survives an audit and one that invites a request for more records.

Keep the CDT code and the note aligned

D4341 and D4342 have specific tooth-count requirements per quadrant, and the note should make it obvious which code applies without the biller having to guess from vague language. If you're not confident on the distinction or on related perio codes more broadly, our CDT codes for dental hygienists reference breaks down the codes hygienists bill against most often.

Related: Periodontal Charting Documentation: A Practical Guide · Insurance Claim Denials from Poor Documentation · CDT Codes for Dental Hygienists