ICD-10-PCS Code For Skin, Scalp: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 0H90 includes procedures performed to drain fluids and/or gases from the skin and scalp. These ICD-10-PCS codes are used for inpatient documentation when a clinical situation requires removal of fluid or gas from skin or scalp through incision, aspiration, or drainage device placement. Accurate coding within the ICD-10-PCS 0H90 group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

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Skin, Scalp Drainage Procedure Overview

Procedures in this group involve drainage of the skin and scalp and target the Skin and Breast body system. These operations remove fluids or gases from the skin or scalp through incision, aspiration, or insertion of a drain. Accurate ICD-10-PCS coding ensures the inpatient record reflects the specific drainage procedure performed and supports appropriate inpatient reimbursement. Proper coding also aids clinical documentation and case mix assignment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
H	Body System	Skin and Breast
9	Operation	Drainage
0	Body Part	Skin, Scalp

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ICD-10-PCS Code For Skin, Scalp: Procedure Code Group Overview

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Skin, Scalp Drainage Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
H	Body System	Skin and Breast
9	Operation	Drainage
0	Body Part	Skin, Scalp

When to Use

Use a code from this group when the clinical procedure involved draining fluid or gas from the skin or scalp during an inpatient stay. Select the code that matches the method of drainage and the specific skin or scalp site documented in the medical record.

ICD-10-PCS Codes

3 rows

ICD-10-PCS Code	Description
0H90X0Z	Drainage of Scalp Skin with Drainage Device, External Approach
0H90XZX	Drainage of Scalp Skin, External Approach, Diagnostic
0H90XZZ	Drainage of Scalp Skin, External Approach

Typical Clinical Scenarios

An elderly patient on anticoagulation presents to the emergency department with a rapidly expanding, tense scalp hematoma after minor head trauma. Because the hematoma is causing skin compromise and worsening pain, the patient is admitted for monitoring and surgical drainage of the scalp skin to evacuate the collected blood and relieve pressure; the procedure is performed via an external incision and placement of a drainage device to prevent reaccumulation. Typical codes: 0H90X0Z
A middle-aged patient with a large, fluctuant infected subcutaneous scalp abscess that failed outpatient needle aspiration and oral antibiotics is scheduled for inpatient incision and drainage; the operation entails external incision of the scalp skin, evacuation of purulent fluid, and insertion of a drain for continued external drainage while the infection is controlled. Typical codes: 0H90X0Z, 0H90XZZ
A hospitalized patient develops a nonhealing seroma under a prior scalp surgical site after cranioplasty; after conservative measures fail and the collection persists with risk of skin breakdown, the team performs an external diagnostic drainage to sample fluid and assess for infection before definitive management. Typical codes: 0H90XZX, 0H90XZZ

Related Codes

0H91-SKIN-FACE-DRAINAGE

ICD-10-PCS Code For Skin Face: Procedure Code Group Overview

0H92-SKIN-RIGHT-EAR-DRAINAGE

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

0H93-LEFT-EAR-DRAINAGE

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

0H94-SKIN-NECK-DRAINAGE

ICD-10-PCS Code For Skin, Neck: Procedure Code Group Overview

0H95-SKIN-CHEST-DRAINAGE

ICD-10-PCS Code For Skin Chest: Procedure Code Group Overview

0H96-SKIN-BACK-DRAINAGE

ICD-10-PCS Code For Skin, Back: Procedure Code Group Overview

0H97-SKIN-ABDOMEN-DRAINAGE

ICD-10-PCS Code For Skin Abdomen: Procedure Code Group Overview

0H98-SKIN-BUTTOCK-DRAINAGE

ICD-10-PCS Code For Skin Buttock: Procedure Code Group Overview

0H99-SKIN-PERINEUM-DRAINAGE

ICD-10-PCS Code For Skin Perineum: Procedure Code Group Overview

0H9A-INGUINAL-DRAINAGE

ICD-10-PCS Code For Inguinal Skin: Procedure Code Group Overview

Showing 1–10 of 28

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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Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

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When to Use

ICD-10-PCS Codes

3 rows

ICD-10-PCS Code	Description
0H90X0Z	Drainage of Scalp Skin with Drainage Device, External Approach
0H90XZX	Drainage of Scalp Skin, External Approach, Diagnostic
0H90XZZ	Drainage of Scalp Skin, External Approach

Typical Clinical Scenarios

An elderly patient on anticoagulation presents to the emergency department with a rapidly expanding, tense scalp hematoma after minor head trauma. Because the hematoma is causing skin compromise and worsening pain, the patient is admitted for monitoring and surgical drainage of the scalp skin to evacuate the collected blood and relieve pressure; the procedure is performed via an external incision and placement of a drainage device to prevent reaccumulation. Typical codes: 0H90X0Z
A middle-aged patient with a large, fluctuant infected subcutaneous scalp abscess that failed outpatient needle aspiration and oral antibiotics is scheduled for inpatient incision and drainage; the operation entails external incision of the scalp skin, evacuation of purulent fluid, and insertion of a drain for continued external drainage while the infection is controlled. Typical codes: 0H90X0Z, 0H90XZZ
A hospitalized patient develops a nonhealing seroma under a prior scalp surgical site after cranioplasty; after conservative measures fail and the collection persists with risk of skin breakdown, the team performs an external diagnostic drainage to sample fluid and assess for infection before definitive management. Typical codes: 0H90XZX, 0H90XZZ

Related Codes

0H91-SKIN-FACE-DRAINAGE

ICD-10-PCS Code For Skin Face: Procedure Code Group Overview

0H92-SKIN-RIGHT-EAR-DRAINAGE

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

0H93-LEFT-EAR-DRAINAGE

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

0H94-SKIN-NECK-DRAINAGE

ICD-10-PCS Code For Skin, Neck: Procedure Code Group Overview

0H95-SKIN-CHEST-DRAINAGE

ICD-10-PCS Code For Skin Chest: Procedure Code Group Overview

0H96-SKIN-BACK-DRAINAGE

ICD-10-PCS Code For Skin, Back: Procedure Code Group Overview

0H97-SKIN-ABDOMEN-DRAINAGE

ICD-10-PCS Code For Skin Abdomen: Procedure Code Group Overview

0H98-SKIN-BUTTOCK-DRAINAGE

ICD-10-PCS Code For Skin Buttock: Procedure Code Group Overview

0H99-SKIN-PERINEUM-DRAINAGE

ICD-10-PCS Code For Skin Perineum: Procedure Code Group Overview

0H9A-INGUINAL-DRAINAGE

ICD-10-PCS Code For Inguinal Skin: Procedure Code Group Overview

Showing 1–10 of 28

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 Skin, Scalp: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Skin, Scalp: Procedure Code Group Overview policy alerts

Skin, Scalp Drainage Procedure Overview

Code Attributes

ICD-10-PCS Code For Skin, Scalp: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Skin, Scalp: Procedure Code Group Overview policy alerts

Skin, Scalp Drainage Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What procedures are included in ICD-10-PCS code group 0H90?

What are the specific codes listed in the 0H90 group?

Which ICD-10-PCS section and body system apply to these procedures?

How does accurate coding within 0H90 affect inpatient documentation and reimbursement?

What approaches are represented in the 0H90 code descriptions?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What procedures are included in ICD-10-PCS code group 0H90?

What are the specific codes listed in the 0H90 group?

Which ICD-10-PCS section and body system apply to these procedures?

How does accurate coding within 0H90 affect inpatient documentation and reimbursement?

What approaches are represented in the 0H90 code descriptions?

References