ICD-10-PCS Code For Inner Ear Left: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 091E includes procedures performed to bypass structures in the inner ear, left. These ICD-10-PCS codes are used for inpatient documentation when an alternate route is created to redirect the passage of fluids or signals within the left inner ear. Accurate coding within the ICD-10-PCS 091E group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

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Inner Ear Left Bypass Procedure Overview

This group includes inpatient bypass procedures that alter the route of passage of fluids or signals within the left inner ear and surrounding ear, nose, and sinus system. Procedures in this group target the inner ear, left and are coded in the Medical and Surgical section of the International Classification of Diseases, Tenth Revision, Procedure Coding System. Accurate coding ensures the procedure performed is captured for clinical records and appropriate inpatient reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
9	Body System	Ear, Nose, Sinus
1	Operation	Bypass
E	Body Part	Inner Ear, Left

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ICD-10-PCS Code For Inner Ear Left: Procedure Code Group Overview

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Inner Ear Left Bypass Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
9	Body System	Ear, Nose, Sinus
1	Operation	Bypass
E	Body Part	Inner Ear, Left

When to Use

Use a code from this group when a surgical procedure creates an alternate pathway to redirect the flow of fluids or neural signals within the left inner ear. Select the specific code based on the exact bypass procedure performed and documented in the inpatient medical record.

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
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

DRG Codes

3 rows

DRG Code	Description
143	Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC
144	Other Ear, Nose, Mouth and Throat O.R. Procedures with CC
145	Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC

Typical Clinical Scenarios

A 45-year-old patient presents with progressive unilateral Meniere-like symptoms refractory to medical management, including disabling episodic vertigo and documented endolymphatic hydrops on MRI. The otologic surgical team performs a planned open surgical creation of an alternate drainage pathway from the left inner ear to the endolymphatic sac using the patient’s own tissue to relieve endolymphatic pressure. An inpatient code from this group is assigned to capture the open bypass procedure using autologous tissue substitute. Typical codes: 091E070
A middle-aged patient is admitted urgently after worsening vertigo and acute sensorineural deterioration attributed to rapid expansion of endolymphatic fluid despite conservative measures. The surgeon performs an open bypass from the left inner ear to the endolymphatic compartment using a synthetic implant to reestablish fluid egress when immediate decompression is required. The inpatient record documents an open approach with a synthetic substitute, matching the selected code. Typical codes: 091E0J0
A patient with a prior left inner ear drainage procedure presents with recurrent vertigo and persistent fluid accumulation; prior autologous graft has failed or resorbed. During inpatient revision surgery, the team performs an open bypass to the endolymphatic space and uses a nonautologous biologic tissue substitute to reestablish the drainage route. The revision is coded to reflect an open bypass to the endolymphatic compartment with a nonautologous tissue substitute. Typical codes: 091E0K0

Related Codes

091D-INNER-EAR-RIGHT-BYPASS

ICD-10-PCS Code For Inner Ear Right: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
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

DRG Codes

3 rows

DRG Code	Description
143	Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC
144	Other Ear, Nose, Mouth and Throat O.R. Procedures with CC
145	Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC

Typical Clinical Scenarios

A 45-year-old patient presents with progressive unilateral Meniere-like symptoms refractory to medical management, including disabling episodic vertigo and documented endolymphatic hydrops on MRI. The otologic surgical team performs a planned open surgical creation of an alternate drainage pathway from the left inner ear to the endolymphatic sac using the patient’s own tissue to relieve endolymphatic pressure. An inpatient code from this group is assigned to capture the open bypass procedure using autologous tissue substitute. Typical codes: 091E070
A middle-aged patient is admitted urgently after worsening vertigo and acute sensorineural deterioration attributed to rapid expansion of endolymphatic fluid despite conservative measures. The surgeon performs an open bypass from the left inner ear to the endolymphatic compartment using a synthetic implant to reestablish fluid egress when immediate decompression is required. The inpatient record documents an open approach with a synthetic substitute, matching the selected code. Typical codes: 091E0J0
A patient with a prior left inner ear drainage procedure presents with recurrent vertigo and persistent fluid accumulation; prior autologous graft has failed or resorbed. During inpatient revision surgery, the team performs an open bypass to the endolymphatic space and uses a nonautologous biologic tissue substitute to reestablish the drainage route. The revision is coded to reflect an open bypass to the endolymphatic compartment with a nonautologous tissue substitute. Typical codes: 091E0K0

Related Codes

091D-INNER-EAR-RIGHT-BYPASS

ICD-10-PCS Code For Inner Ear Right: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-PCS Code For Inner Ear Left: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Inner Ear Left: Procedure Code Group Overview policy alerts

Inner Ear Left Bypass Procedure Overview

Code Attributes

ICD-10-PCS Code For Inner Ear Left: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Inner Ear Left: Procedure Code Group Overview policy alerts

Inner Ear Left Bypass Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which body system and operation does the ICD-10-PCS 091E group describe?

What specific body part is targeted by codes in this group?

What are the individual ICD-10-PCS codes included in this 091E group?

How does accurate coding of the 091E group affect reimbursement?

Which DRGs are related to procedures in the 091E code group?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which body system and operation does the ICD-10-PCS 091E group describe?

What specific body part is targeted by codes in this group?

What are the individual ICD-10-PCS codes included in this 091E group?

How does accurate coding of the 091E group affect reimbursement?

Which DRGs are related to procedures in the 091E code group?

References