091 Bypass - Ear, Nose, Sinus ICD-10-PCS
The 091 code range contains 9 ICD-10-PCS codes for Bypass procedures on the ear, nose, sinus. 8 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Bypass: Altering the route of passage of the contents of a tubular body part.
Codes in the 091 Range 9 codes · 8 billable
- 091 Ear, Nose, Sinus, BypassNon-billable header
- 091D070 Bypass Right Inner Ear to Endolymphatic with Autologous Tissue Substitute, Open Approach
- 091D0J0 Bypass Right Inner Ear to Endolymphatic with Synthetic Substitute, Open Approach
- 091D0K0 Bypass Right Inner Ear to Endolymphatic with Nonautologous Tissue Substitute, Open Approach
- 091D0Z0 Bypass Right Inner Ear to Endolymphatic, Open Approach
- 091E070 Bypass Left Inner Ear to Endolymphatic with Autologous Tissue Substitute, Open Approach
- 091E0J0 Bypass Left Inner Ear to Endolymphatic with Synthetic Substitute, Open Approach
- 091E0K0 Bypass Left Inner Ear to Endolymphatic with Nonautologous Tissue Substitute, Open Approach
- 091E0Z0 Bypass Left Inner Ear to Endolymphatic, Open Approach
About the 091 Code Range
The ICD-10-PCS root operation Bypass refers to the procedure of creating an alternate pathway to route the flow of body fluids or other substances from one site to another. Within the Medical and Surgical section focusing on the Ear, Nose, and Sinus body system, this operation involves bypassing anatomical structures in the inner ear.
Examples of this operation include codes for bypassing the Right or Left Inner Ear to the Endolymphatic pathway, typically performed by an Open Approach. The procedure can involve using various substitutes, such as Autologous Tissue, Synthetic Substitute, or Nonautologous Tissue, or it may be done without any substitute. For instance, code 091D070 describes bypass of the right inner ear to endolymphatic with an autologous tissue substitute, while 091E0Z0 indicates bypass of the left inner ear to endolymphatic without a tissue substitute. These specific ICD-10-PCS bypass codes allow precise documentation of procedures that reroute inner ear pathways to restore or improve physiological flow.
Questions About This Page
How many billable codes are in the 091 range?
Of the 9 codes in this range, 8 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the 091 range classify?
The range classifies Bypass procedures, altering the route of passage of the contents of a tubular body part, performed on the ear, nose, sinus. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
