Over the past year, many dental offices have noticed an increase in denials for Scaling and Root Planing (SRP). The most common reasons?
- “Insufficient bone loss”
- “Probing depths do not meet criteria”
- “Lack of medical necessity”
In most cases, these denials are not about the treatment itself — they are about documentation.
Insurance carriers are no longer approving SRP based on pocket depth alone. They want clear evidence of active periodontal disease, not gingivitis and not routine prophylaxis.
If your claims are being denied, here is what must be documented to improve approval rates.
1. Clearly Establish the Diagnosis
Avoid vague terms like “periodontitis.”
Your diagnosis should include:
- Stage (I, II, III, IV)
- Grade (A, B, C)
- Localized or generalized
- Severity level
- Active disease indicators
Example: Generalized Stage II Grade B periodontitis with active inflammation and bleeding on probing.
Using the 2018 AAP classification system strengthens credibility and shows structured clinical assessment rather than revenue-driven coding.
2. Document Multiple Clinical Indicators
Most carriers require more than one finding. Pocket depth alone is not sufficient.
Probing Depths
- 5mm or greater
- Multiple sites per quadrant
- Specify affected teeth
Example: 5–7mm probing depths on teeth #2, 3, 4, 5, 14, and 15 with bleeding on probing.
Bleeding on Probing (BOP)
This is critical for establishing active inflammation.
Example: Bleeding on probing present in 80% of affected sites.
Without BOP documentation, many insurers downgrade to prophylaxis.
Radiographic Bone Loss
Describe:
- Percentage of bone loss
- Horizontal vs. vertical pattern
- Localized or generalized involvement
Example: Radiographs reveal 15–30% horizontal bone loss consistent with moderate periodontitis.
If no radiographic bone loss is visible, strong justification becomes even more important.
Clinical Attachment Loss (CAL)
If available, include it. CAL significantly strengthens claims.
Inflammation Indicators
Document:
- Suppuration
- Subgingival calculus
- Heavy biofilm
- Gingival edema
Example: Generalized subgingival calculus with localized suppuration on #30 and #31.
Insurance companies want proof of active infection — not just numbers on a chart.
3. Include Patient Risk Factors (Medical Necessity)
Claims are much stronger when systemic risk is documented.
Include:
- Diabetes (especially uncontrolled)
- Smoking
- Cardiovascular disease
- Pregnancy
- Immunocompromised status
- History of periodontal therapy
- Genetic predisposition
Example: Patient is a Type II diabetic with HbA1c of 8.2%, increasing periodontal risk.
When periodontal treatment is linked to systemic health, approval rates improve.
4. Clearly State Why Prophylaxis Is Inadequate
Many denials occur because carriers believe a prophy would suffice.
Include a direct statement such as: Due to 6mm probing depths and subgingival calculus extending beyond 3mm, routine prophylaxis would be inadequate. SRP is required to arrest disease progression.
This single sentence often makes the difference between denial and approval.
5. Always Submit Complete Attachments
Do not rely on narratives alone. Include:
- Full 6-point periodontal charting
- Bitewings and/or periapical radiographs
- Intraoral photos (if available)
- Detailed narrative
Many claims are denied simply due to missing documentation.
Common Reasons for SRP Denial
- Only 4mm pockets
- No bleeding documented
- No radiographic bone loss
- No narrative submitted
- Generic wording such as “deep cleaning needed”
- Missing periodontal chart
Avoiding these common mistakes can significantly improve first-pass payment.
When Bone Loss Is Minimal
If radiographic bone loss is minimal but 5mm+ pockets are present, emphasize:
- Bleeding percentage
- Inflammation severity
- Calculus depth
- Systemic risk factors
- Evidence of disease progression
If pockets are limited to 4mm without bone loss, many carriers classify the condition as gingivitis and deny SRP.
The Bottom Line
For SRP claims to be approved consistently, documentation must clearly demonstrate:
- Active periodontal disease
- Pocket depths ≥5mm
- Radiographic bone loss
- Bleeding and inflammation
- Subgingival calculus
- Why prophylaxis is insufficient
- Medical necessity tied to systemic risk
SRP approvals today require stronger clinical documentation than ever before. Offices that implement structured periodontal charting protocols and standardized narratives see significantly higher acceptance rates on initial submission.
Proper documentation is no longer optional — it is essential.