D9225ADA CDT ProcedureAdjunctiveANESTHESIA

D9225 - Gen Anesth Addl

General anesthesia with advanced airway - addl.

Patient-Friendly Summary: This covers each additional 15-minute increment of general anesthesia with advanced airway management during extended surgical operations. It maintains steady, safe unconsciousness and complete pain relief until your surgery is finished. You will wake up safely in recovery under close professional care with no recollection of the surgical intervention.
Clinical Documentation Notes: Not a covered benefit.
Procedure Code
D9225
Clinical Category
Adjunctive
Primary ICD-10 Justification
See mapped diagnoses below
Reference Fee & Claim Types
DENTAL

Insurance Verification Benchmarks & Billing Guidelines

Payer policy benchmarks, pre-submission attachment requirements, and denial prevention rules for D9225.

Source: Delta Dental 2026
Frequency Limitation
Subject to group/individual contract frequency limitations (none)

Required Claim Attachments & Pre-Submission Checklist

  • Standard ADA claim form with CDT procedure code and date of service

Bill When (Allowable Clinical Criteria)

  • Indicated for medically and clinically necessary treatment as documented in patient's dental record.

Restrictions & Clinical Exclusions

  • General anesthesia and intravenous sedation are limited to one hour. Any additional minutes are not billable to the patient unless clinical documentation (e.g., anesthesia record) supports more than an hour was necessary.
  • Benefits are available when performed in conjunction with oral surgical procedures (D7000-D7999) when covered, or when necessary, due to subsequent 15 minute increment or any increment thereof concurrent medical conditions. Otherwise, the benefit for deep sedation/general anesthesia is denied unless specifically covered by group/individual contract. b Benefits for more than one hour of deep sedation are not billable to the patient unless clinical documentation supports more than an hour was necessary.
  • Benefits for deep sedation/general anesthesia are denied when billed by anyone other than an appropriately licensed and qualified provider.
  • General anesthesia and intravenous sedation are limited to one hour. Any additional minutes are not billable to the patient unless clinical documentation supports more than an hour was necessary. For example, special health care needs patients may require additional units of anesthesia and may be a benefit according to group/individual contract.
  • All services and treatment provided remotely via tele-health modalities, be they synchronous or asynchronous, must be performed by a licensed dentist or their supervised staff, acting within the scope of applicable law. Services and treatment delivered virtually are only a benefit when the elements included in the descriptor of the CDT procedure code are completed and only when they meet generally accepted clinical guidelines.
  • Benefits for restorations for altering occlusion, adjusting vertical dimension, replacing tooth structure lost by attrition, erosion, abrasion, abfraction, corrosion, TMD, or for periodontal, orthodontic, or other splinting are denied, unless covered by group contract.

Common Claim Denial Codes & Overturn Strategies

Denial CodeDenial ReasonAppeal & Overturn Strategy
CO-119Benefit maximum or frequency limitation exceeded for procedureSubmit clinical narrative detailing extraordinary circumstances, active recurrent pathology, or exception criteria.

ICD-10-CM Justification & Crosswalk Mappings for D9225 (0)

Click any ICD-10-CM diagnosis code below to inspect its reverse procedure mappings and differential coding guide.

No direct ICD-10 mappings recorded for D9225.

Frequently Asked Questions — D9225 (Gen Anesth Addl)

Quick answers for dental billers and treatment coordinators submitting claims for D9225.

What ICD-10 diagnosis codes link to dental procedure D9225?▾

Currently no specific ICD-10 crosswalk mappings recorded for CDT D9225.

Can CDT code D9225 be billed to medical insurance?▾

Billing CDT D9225 (Gen Anesth Addl) to medical insurance depends on the underlying clinical necessity and trauma/pathology documentation. Supported claim types across linked diagnoses: DENTAL.

What attachments and documentation are required for billing CDT D9225?▾

Required claim attachments for CDT D9225 (Gen Anesth Addl) include: Standard ADA claim form with CDT procedure code and date of service.

What is the insurance frequency limitation for CDT D9225?▾

Standard commercial insurance frequency for D9225: Subject to group/individual contract frequency limitations (none).

What are common insurance denial reasons and appeal tips for CDT D9225?▾

Denial Code CO-119 (Benefit maximum or frequency limitation exceeded for procedure): Overturn appeal strategy - Submit clinical narrative detailing extraordinary circumstances, active recurrent pathology, or exception criteria.