What should the D2952 chart note include?
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Post and core - cast, in addition to crown. RMH: Medical history reviewed/updates Vitals: BP/pulse; other vitals if indicated Tooth: #Tooth number(s) Indication: Indication/diagnosis Post/core code support: Insufficient tooth structure; post/core required for crown retention Endodontic status: RCT completed/date; canal selected; remaining apical seal Remaining tooth structure: Walls/cusps/ferrule/retention details Missing tooth structure after prep, before core: % missing Pre/post-prep photos: Images labeled tooth/date Radiographs/photos: Radiographs/photos reviewed/taken and findings Endodontically treated tooth with insufficient coronal structure. Consent: Consent/PARQ reviewed; signed/verbally obtained Anesthesia: Anesthetic used Carps: Carpules/amount Preparation Appointment: Gutta percha removed to appropriate depth. Post space prepared. Adequate apical seal maintained. Post space impression taken. Provisional post/core or temp placed. Lab: Material: Material Cementation Appointment: Provisional removed. Cast post and core tried in. Fit verified. Passive fit confirmed. Cemented with: Cement used Excess cement removed. Tooth prepared for crown. Impression taken. Provisional crown placed. Complications: None or describe. Patient tolerance: Tolerance/response. NV: Next visit
What documentation is required for D2952?
D2952 sits at the intersection of restorative and endodontic documentation, and carriers audit it accordingly. The defensible note has to support insufficient coronal structure, completed and stable RCT, preserved apical seal, and a planned crown on the same tooth. A defensible note includes:
- Tooth number — universal numbering. One tooth per D2952 line item.
- Indication / diagnosis — endodontically treated tooth with insufficient coronal structure for crown retention. Be specific about which walls are missing and why a direct buildup (D2950) is not adequate (oval/flared canal, inadequate ferrule, large core volume, esthetic anterior).
- Post/core code support — the line that justifies post-and-core over a buildup-only restoration. Document missing walls, percent of coronal structure missing after prep, ferrule height circumferentially, and the retention rationale for an intraradicular post.
- Endodontic status — RCT completion date, who performed it (in-office vs referred), the canal(s) selected for the post, and the apical gutta-percha seal preserved (target 4-5 mm). A pre-op PA confirming completed RCT and a post-op PA confirming preserved apical seal are the strongest audit support a chart can carry.
- Remaining tooth structure — walls present, ferrule height (mm) circumferentially, cusp status, sub-gingival margin location if relevant. Carriers and crown-lengthening reviewers look here for justification of a full-coverage indirect approach.
- Missing tooth structure after prep, before core — quantitative estimate (e.g., "approximately 60% of coronal structure missing after prep"). This is the AAE/ACP-aligned framing that distinguishes a post-and-core case from a buildup-only case.
- Pre/post-prep photos and radiographs — labeled with tooth number and date. Pre-op IO photo showing missing walls, pre-op PA showing completed RCT, post-space PA confirming depth and apical seal, post-cementation PA, and a final post-op IO photo. Photos materially strengthen audit defense.
- Replacement of failed prior post (if applicable) — if a previously placed post was removed, document the removal in its own procedure block and bill D2955 separately. State the reason for failure (fracture, recurrent caries, debond, root fracture ruled out) and the tooth's current restorability assessment.
- Consent / PARQ — restorability discussion, post-and-core vs extraction-and-implant, root-fracture risk, debond/loosening risk, future endodontic retreatment access through a cast post (substantially harder than through a prefab post or buildup), and crown plan.
- Anesthesia — agent, concentration, vasoconstrictor, technique (block vs infiltration), carpules. The post-prep visit is typically anesthetized; the cementation visit may or may not be, document accordingly.
- Preparation appointment block — gutta percha removed to planned depth, post space prepared (state instrument: Gates-Glidden, Peeso, ParaPost reamer, etc.), apical seal preserved (4-5 mm), post space impression taken (impression material), provisional post/core or temp placed.
- Lab and material — lab name (or in-office mill), alloy (high-noble gold, base-metal, NPG, fiber/ceramic if used), and any specific design instructions to the lab.
- Cementation appointment block — provisional removed, cast post-and-core tried in, fit verified clinically and radiographically (PA at try-in), passivity confirmed, cement used (resin, RMGI, zinc phosphate, GI), excess cement removed. Then crown prep, crown impression, and provisional crown placement if completed at the same visit.
- Crown plan reference — explicit statement that a crown is planned on the same tooth, with the planned crown CDT code (D2740 / D2750 / D2752 etc.) and the appointment scheduled.
- Complications — explicit "None" or describe (e.g., resistant gutta percha requiring solvent, perforation risk, post-space lateral wall thinness, need to abandon a canal). Silence is read as undocumented.
- Patient tolerance / response — tolerated well, no signs of distress.
- Next visit — crown delivery / cementation date, post-op PA timing, and any endodontic re-evaluation if prognosis was guarded.
Two recurring "soft" defects to avoid: (1) submitting D2952 with a chart note that reads like a single-appointment direct buildup with a prefab post — the carrier downgrades to D2954 (prefab) or D2950 (buildup); and (2) defaulted-template wording that says "4-5 mm apical seal preserved" with no PA on file showing the seal. Both are audit triggers and both are recoupment-grade defects under most Medicaid MCO and Delta Dental policy bulletins.
Why does D2952 get denied?
The most frequent reasons D2952 is denied, downgraded, or recouped:
- No documented crown plan — D2952 billed without an accompanying crown code in the treatment plan or claim history. Carriers enforce the descriptor's "in addition to crown" language and deny the post-and-core when the crown is not planned or not placed within the carrier's window.
- Alternate benefit to D2954 — the chart does not show a two-appointment indirect workflow (impression, lab fabrication, separate cementation visit). The carrier processes the claim at the D2954 prefab fee schedule. This is the single most common D2952 outcome on PPO claims.
- Missing PA confirming completed RCT — no pre-op PA showing obturation, or the obturation is short, voided, or shows a periapical lesion. Auditors treat the underlying RCT as a prerequisite and will deny the post-and-core if endodontic status is not documented and visualized.
- Inadequate apical seal — the post-space PA shows less than the standard 4-5 mm of apical gutta percha. Carriers and quality reviewers cite this as a clinical defect and use it as a basis for denial or recoupment.
- D2952 + D2950 same tooth same date — bundled per virtually all carrier policies; the post-and-core is inclusive of the core.
- Frequency violation — second D2952 on the same tooth within the carrier's lifetime or lookback window without a narrative documenting prior post failure and removal (and the corresponding D2955).
- Insufficient coronal-structure documentation — the chart says "post and core needed" without specifying missing walls, ferrule status, percent missing, or oval/flared canal anatomy. Auditors downgrade to D2950 (buildup-only) when the indirect post rationale is not supported.
- Anterior tooth with adequate ferrule and minimal missing structure — carrier reviewers commonly question post-and-core necessity on anteriors with intact lingual and buccal walls and 2+ mm circumferential ferrule. Document why a post is required despite reasonable remaining structure (esthetic crown plan, oval canal, prior failed direct restoration).
- Default-template wording — "4-5 mm apical seal preserved" and "passive fit confirmed" appearing on every D2952 chart with no patient-specific PA or photo. Pattern-recognizable to auditors and recoupment-grade in Medicaid MCO reviews.
- Pediatric primary tooth — D2952 on a primary tooth is essentially never appropriate and almost never reimbursed; primary-tooth pulp therapy uses D3220/D3230/D3240 with D2930/D2934 stainless-steel crown coverage.
What do practices ask about D2952?
What's the difference between D2952 and D2954?+
Workflow and fabrication. D2952 is a cast (indirectly fabricated) post and core — two appointments, requires a post-space impression, lab fabrication, and a separate cementation visit. D2954 is a prefabricated post and direct core, placed in a single appointment with no impression and no lab. The chart note's two-appointment structure (preparation visit with impression + lab Rx + cementation visit) is what supports D2952 over D2954. Without that documentation, carriers commonly alternate-benefit a billed D2952 to the D2954 fee schedule.
Can I bill D2950 and D2952 on the same tooth?+
No. D2950 (core buildup) and D2952 (post and core) are mutually exclusive on the same tooth — the post-and-core is the buildup. Carriers bundle the two and pay only one. The most common audit finding is a D2950 + D2952 pair where the chart describes a single buildup with no actual post extending into the canal. If the buildup includes an intraradicular post, bill D2952 (or D2954 for prefab); if no post is placed, bill D2950.
Does D2952 require a completed root canal?+
Yes. The procedure is descriptor- and clinically-locked to endodontically treated teeth. Most carriers will not pay D2952 unless completed RCT (D3310/D3320/D3330) appears in the patient's claim history for the same tooth, or unless a pre-op PA confirming completed obturation is submitted with the claim. The standard apical seal target is 4-5 mm of gutta percha preserved at the apex during post-space preparation, and a post-space PA verifying this is the strongest audit support a chart can carry.
Do I need to bill the crown separately?+
Yes. D2952 is descriptor-locked to "in addition to crown" and does not include the crown itself. Bill the indirect crown separately under D2740 (porcelain/ceramic), D2750 (PFM, high noble), D2752 (PFM, noble), or another applicable D27xx code. Carriers commonly require evidence of a planned or placed crown on the same tooth — same date or within a defined window (often 60-180 days) — to release the post-and-core benefit. A D2952 billed without an accompanying crown code is a frequent denial trigger.
If I'm replacing a failed post, do I bill D2952 again?+
Yes — and bill D2955 separately for the removal of the failed post. Document the removal procedure (instrument, technique, time) and the reason for failure (fracture, debond, recurrent caries, retreatment access) in its own procedure block, and document the current restorability assessment supporting a new post-and-core. Most PPOs treat post-and-core as a once-per-tooth-per-lifetime benefit, so a second D2952 on the same tooth requires a narrative explaining the prior failure and the corresponding D2955.
Can D2952 be done in a single visit?+
Not as D2952. The defining feature of D2952 is the indirect lab workflow — post-space impression, lab fabrication, and separate cementation appointment. A single-visit post-and-core uses a prefabricated post and direct core and is billed as D2954, not D2952. Some offices use a CAD/CAM workflow to mill a custom post-and-core in a single visit; carrier policies vary on whether that workflow qualifies as D2952 ("indirectly fabricated") or D2954 — verify with the carrier and document the milling/lab process in the chart.
Is pre-authorization required for D2952?+
Pre-authorization is not universally mandated but is strongly recommended across nearly all carriers. Submit the pre-op PA showing completed RCT and apical seal status, an IO photo or narrative documenting missing coronal walls and ferrule, and the planned crown CDT code. Pre-authorization significantly reduces the rate of alternate-benefit downgrades to D2954 and frequency-related denials, and it surfaces Medicaid non-coverage early — many state Medicaid programs exclude D2952 from adult benefit packages and pay only D2954 or D2950 when a post is required.