ICD-10-PCS Code For Left Parotid Gland: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 0CT9 includes procedures performed to resect glandular tissue in the mouth and throat, specifically the parotid gland. These ICD-10-PCS codes are used for inpatient documentation when a surgeon performs an open resection of the parotid gland, such as removal of all or part of the left parotid for neoplasm or other pathology. Accurate coding within the ICD-10-PCS 0CT9 group is essential for proper inpatient reimbursement, as it captures the procedure performed and determines appropriate case mix and payment.

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Parotid Gland Resection Procedure Overview

The procedures in ICD-10 PCS 0CT9 involve surgical resection of the parotid gland and target the mouth and throat body system. These are open surgical removals of all or part of the left parotid gland as specified by the operation. Accurate ICD-10-PCS coding ensures the inpatient record reflects the resection performed and supports correct case mix assignment and reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
C	Body System	Mouth and Throat
T	Operation	Resection
9	Body Part	Parotid Gland, Left

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ICD-10-PCS Code For Left Parotid Gland: Procedure Code Group Overview

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Parotid Gland Resection Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
C	Body System	Mouth and Throat
T	Operation	Resection
9	Body Part	Parotid Gland, Left

When to Use

Use a code from this group when an open surgical resection of the left parotid gland is performed during an inpatient stay. Typical clinical circumstances include removal of the gland for tumors, chronic infection, or other pathology requiring surgical excision.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
0CT90ZZ	Resection of Left Parotid Gland, Open Approach

DRG Codes

4 rows

DRG Code	Description
139	Salivary Gland Procedures
987	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis with MCC
988	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis with CC
989	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis without CC/MCC

Typical Clinical Scenarios

An adult patient presents with a rapidly enlarging, painful mass in the left preauricular region with facial swelling and concern for a neoplasm on imaging. After inpatient evaluation and fine-needle aspiration suggesting malignancy, the surgical team performs an open resection of the left parotid gland to remove the tumor with appropriate margins. Postoperative inpatient monitoring is required for airway observation and facial nerve assessment. Typical codes: 0CT90ZZ
A middle-aged patient with chronic recurrent parotitis of the left gland experiences ongoing pain, sialadenitis, and decreased quality of life despite conservative outpatient therapies. The case is scheduled as an inpatient elective open resection of the left parotid gland to definitively treat the chronic infection and prevent further episodes. The patient is admitted for the planned operation with routine perioperative monitoring. Typical codes: 0CT90ZZ
A patient with a prior partial parotid excision on the left returns with persistent or recurrent disease requiring removal of the remaining gland tissue. Due to scar tissue and altered anatomy from the earlier surgery, the surgical team performs an open resection of the left parotid gland during an inpatient stay to achieve complete excision and manage potential complications. Postoperative care includes monitoring for facial nerve function and wound healing. Typical codes: 0CT90ZZ

Related Codes

0CT0-UPPER-LIP-RESECTION

ICD-10-PCS Code For Upper Lip: Procedure Code Group Overview

0CT1-LOWER-LIP-RESECTION

ICD-10-PCS Code For Lower Lip: Procedure Code Group Overview

0CT2-HARD-PALATE-RESECTION

ICD-10-PCS Code For Hard Palate: Procedure Code Group Overview

0CT3-SOFT-PALATE-RESECTION

ICD-10-PCS Code For Soft Palate: Procedure Code Group Overview

0CT7-TONGUE-RESECTION

ICD-10-PCS Code For Tongue: Procedure Code Group Overview

0CT8-RIGHT-PAROTID-GLAND-RESECTION

ICD-10-PCS Code For Right Parotid Gland: Procedure Code Group Overview

0CTB-PAROTID-DUCT-RESECTION

ICD-10-PCS Code For Parotid Duct: Procedure Code Group Overview

0CTC-LEFT-PAROTID-DUCT-RESECTION

ICD-10-PCS Code For Left Parotid Duct: Procedure Code Group Overview

0CTD-SUBLINGUAL-GLAND-RESECTION

ICD-10-PCS Code For Sublingual Gland: Procedure Code Group Overview

0CTF-LEFT-SUBLINGUAL-GLAND-RESECTION

ICD-10-PCS Code For Left Sublingual Gland: Procedure Code Group Overview

Showing 1–10 of 23

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

1 rows

ICD-10-PCS Code	Description
0CT90ZZ	Resection of Left Parotid Gland, Open Approach

DRG Codes

4 rows

DRG Code	Description
139	Salivary Gland Procedures
987	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis with MCC
988	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis with CC
989	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis without CC/MCC

Typical Clinical Scenarios

An adult patient presents with a rapidly enlarging, painful mass in the left preauricular region with facial swelling and concern for a neoplasm on imaging. After inpatient evaluation and fine-needle aspiration suggesting malignancy, the surgical team performs an open resection of the left parotid gland to remove the tumor with appropriate margins. Postoperative inpatient monitoring is required for airway observation and facial nerve assessment. Typical codes: 0CT90ZZ
A middle-aged patient with chronic recurrent parotitis of the left gland experiences ongoing pain, sialadenitis, and decreased quality of life despite conservative outpatient therapies. The case is scheduled as an inpatient elective open resection of the left parotid gland to definitively treat the chronic infection and prevent further episodes. The patient is admitted for the planned operation with routine perioperative monitoring. Typical codes: 0CT90ZZ
A patient with a prior partial parotid excision on the left returns with persistent or recurrent disease requiring removal of the remaining gland tissue. Due to scar tissue and altered anatomy from the earlier surgery, the surgical team performs an open resection of the left parotid gland during an inpatient stay to achieve complete excision and manage potential complications. Postoperative care includes monitoring for facial nerve function and wound healing. Typical codes: 0CT90ZZ

Related Codes

0CT0-UPPER-LIP-RESECTION

ICD-10-PCS Code For Upper Lip: Procedure Code Group Overview

0CT1-LOWER-LIP-RESECTION

ICD-10-PCS Code For Lower Lip: Procedure Code Group Overview

0CT2-HARD-PALATE-RESECTION

ICD-10-PCS Code For Hard Palate: Procedure Code Group Overview

0CT3-SOFT-PALATE-RESECTION

ICD-10-PCS Code For Soft Palate: Procedure Code Group Overview

0CT7-TONGUE-RESECTION

ICD-10-PCS Code For Tongue: Procedure Code Group Overview

0CT8-RIGHT-PAROTID-GLAND-RESECTION

ICD-10-PCS Code For Right Parotid Gland: Procedure Code Group Overview

0CTB-PAROTID-DUCT-RESECTION

ICD-10-PCS Code For Parotid Duct: Procedure Code Group Overview

0CTC-LEFT-PAROTID-DUCT-RESECTION

ICD-10-PCS Code For Left Parotid Duct: Procedure Code Group Overview

0CTD-SUBLINGUAL-GLAND-RESECTION

ICD-10-PCS Code For Sublingual Gland: Procedure Code Group Overview

0CTF-LEFT-SUBLINGUAL-GLAND-RESECTION

ICD-10-PCS Code For Left Sublingual Gland: Procedure Code Group Overview

Showing 1–10 of 23

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 Left Parotid Gland: Procedure Code Group Overview

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

Parotid Gland Resection Procedure Overview

Code Attributes

ICD-10-PCS Code For Left Parotid Gland: Procedure Code Group Overview

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

Parotid Gland Resection Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

What procedure does ICD-10-PCS code group 0CT9 describe?

Which specific ICD-10-PCS code represents resection of the left parotid gland via open approach?

What section and operation attributes apply to the 0CT9 code group?

How does accurate coding in ICD-10-PCS 0CT9 affect hospital reimbursement?

Which DRG categories are related to procedures in the 0CT9 group?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

What procedure does ICD-10-PCS code group 0CT9 describe?

Which specific ICD-10-PCS code represents resection of the left parotid gland via open approach?

What section and operation attributes apply to the 0CT9 code group?

How does accurate coding in ICD-10-PCS 0CT9 affect hospital reimbursement?

Which DRG categories are related to procedures in the 0CT9 group?

References