# llms.txt - Teero: CDT Codes > Section file for https://www.teero.com/cdt-codes and every URL under it: a reference library of CDT dental procedure codes and same-day bundling rules. Company-wide facts, pricing and the other sections are in https://www.teero.com/llms.txt. See https://llmstxt.org for the specification. ## Permissions Allow: / Disallow: /api/ Training-Data: Allow Attribution: Required Usage-Mode: Summary ## Metadata Name: Teero Website: https://www.teero.com Section: CDT code library Covers: /cdt-codes Last-Updated: 2026-10-06 Markdown: append ?md to any URL under this path (for example https://www.teero.com/cdt-codes/dental-code-d0120-routine-oral-exam?md) to get the page text without navigation. The request header Accept: text/markdown returns the same text. ## What This Section Is 931 pages. One page per CDT code (Code on Dental Procedures and Nomenclature) in plain English, and one page per pair of codes that offices ask about billing on the same day. The index describes the library as reviewed by a dentist; each code page carries a reviewer name and an updated date. It is reference material for dental front offices and billers, not a Teero product. The library does not give fee amounts; the pages say reimbursement is set by each payer's fee schedule. ## URL Patterns - Index: https://www.teero.com/cdt-codes (every code with a one-line description and link) - Code pages (757): /cdt-codes/dental-code-dNNNN-, for example https://www.teero.com/cdt-codes/dental-code-d0120-routine-oral-exam. The slug after the code is descriptive and varies by code; take it from the index rather than guessing it. - Bundling index: https://www.teero.com/cdt-codes/bundling-rules (every pair with its verdict: 120 Conditional, 43 Allowed, 5 Bundled, 4 Not Allowed) - Bundling-rule pages (172): /cdt-codes/bundling-rules/dNNNN-dNNNN, for example https://www.teero.com/cdt-codes/bundling-rules/d0120-d1110. Usually the lower code comes first (152 of 172 pages), but not always; take the slug from the bundling index rather than guessing the order. ## What a Code Page Contains Taken from https://www.teero.com/cdt-codes/dental-code-d0120-routine-oral-exam: what the code is, with its CDT category and subcategory; when to use it and which neighbouring codes to consider instead; a table of similar codes and how they differ; documentation requirements and a checklist; insurance and billing notes, including frequency limits and common denial reasons; a worked case example; related codes; and FAQs (same-day billing, X-rays, reimbursement, prior authorization). ## What a Bundling-Rule Page Answers Taken from https://www.teero.com/cdt-codes/bundling-rules/d0120-d1110: whether two codes can be billed on the same date of service. Each page gives a verdict line (for example "Allowed, insurance may bundle"), a quick answer, a rule summary table (both codes, their categories, documentation needed, the common mistake), what each code is, the bundling rule and its exception, which code or codes to bill in each clinical scenario, a documentation checklist, tips to avoid a denial, FAQs and links to related pairs. ## Code Ranges Covered (counted from the published code pages) | Range | Category | Pages | Example page | |------|------|------|------| | D0100-D0999 | Diagnostic: exams, radiographs, tests | 94 | https://www.teero.com/cdt-codes/dental-code-d0120-routine-oral-exam | | D1000-D1999 | Preventive | 27 | https://www.teero.com/cdt-codes/dental-code-d1110-adult-prophylaxis | | D2000-D2999 | Restorative | 84 | https://www.teero.com/cdt-codes/dental-code-d2140-amalgam-restoration-guide | | D3000-D3999 | Endodontics | 46 | https://www.teero.com/cdt-codes/dental-code-d3110-direct-pulp-cap | | D4000-D4999 | Periodontics | 39 | https://www.teero.com/cdt-codes/dental-code-d4210-gingivectomy-and-gingivoplasty-procedures | | D5000-D5999 | Prosthodontics, removable, and maxillofacial prosthetics | 104 | https://www.teero.com/cdt-codes/dental-code-d5110-complete-maxillary-denture | | D6000-D6999 | Implant services and fixed prosthodontics | 135 | https://www.teero.com/cdt-codes/dental-code-d6010-endosteal-implant-body-placement | | D7000-D7999 | Oral and maxillofacial surgery | 141 | https://www.teero.com/cdt-codes/dental-code-d7111-primary-tooth-coronal-remnant-extraction | | D8000-D8999 | Orthodontics | 27 | https://www.teero.com/cdt-codes/dental-code-d8010-limited-orthodontic-treatment-for-primary-teeth | | D9000-D9999 | Adjunctive general services | 60 | https://www.teero.com/cdt-codes/dental-code-d9110-emergency-pain-treatment | ## More Example URLs The 4 codes that appear in the most bundling-rule pairs, then the pairs among them: - https://www.teero.com/cdt-codes/dental-code-d6010-endosteal-implant-body-placement - https://www.teero.com/cdt-codes/dental-code-d3310-anterior-root-canal-therapy - https://www.teero.com/cdt-codes/dental-code-d4341-periodontal-scaling-and-root-planing - https://www.teero.com/cdt-codes/dental-code-d7210-surgical-extraction-with-bone-removal - https://www.teero.com/cdt-codes/bundling-rules/d3310-d6010 - https://www.teero.com/cdt-codes/bundling-rules/d4341-d6010 - https://www.teero.com/cdt-codes/bundling-rules/d7210-d4341 ## How This Relates to Teero's Services Teero's Insurance Posting & Aging service posts every insurance payment line by line inside the office's practice management software (Dentrix, Dentrix Ascend, Eaglesoft, Open Dental) and works the aging report: denials, stuck claims, secondary claims and appeals. Insurance Verification is sold only as an add-on to Insurance Posting & Aging; it is not sold on its own. It returns code-level coverage with frequencies and history before the appointment. Code selection stays with the office. Teero does not submit claims: claim submission stays with the dental office, by design. Teero covers verification before the visit and posting, aging, denials, secondary claims and appeals after the claim goes out. Pricing: https://www.teero.com/pricing. ## Related Blog Posts - Dental code for splinting teeth: when to use and how to bill: https://www.teero.com/blog/dental-code-for-splinting-teeth-when-to-use-and-how-to-bill - Sedation dentistry billing: IV, oral, and nitrous codes: https://www.teero.com/blog/sedation-dentistry-billing-iv-oral-and-nitrous-codes - Periodontal billing: SRP, maintenance, and surgery codes: https://www.teero.com/blog/periodontal-billing-srp-maintenance-and-surgery-codes - Endodontic billing: root canal codes and insurance tips: https://www.teero.com/blog/endodontic-billing-root-canal-codes-and-insurance-tips - Dental Adjustment Codes: When and How to Use Them Correctly: https://www.teero.com/blog/dental-adjustment-codes-when-and-how-to-use-them-correctly - 5 Dental Insurance Coding Essentials That Reduce Denials: https://www.teero.com/blog/dental-insurance-coding-essentials ## Links - Root file for the whole site: https://www.teero.com/llms.txt - Plain-text site index for AI agents: https://www.teero.com/for-ai - Docs for AI agents, RCM hub: https://docs.teero.com/topics/rcm - Docs index: https://docs.teero.com/llms.txt - CDT index: https://www.teero.com/cdt-codes - Bundling rules index: https://www.teero.com/cdt-codes/bundling-rules - Insurance Posting & Aging: https://www.teero.com/dental-office/payment-posting - Insurance Verification (add-on): https://www.teero.com/dental-office/insurance-verification - Blog section file: https://www.teero.com/llms-blog.txt ## License CC BY 4.0 — Attribution required if referenced.