ICD-10-PCS Code For Subarachnoid Space: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 00F5 includes procedures performed to fragment solid matter in the subarachnoid space, intracranial, within the central nervous system and cranial nerves. These ICD-10-PCS codes are used for inpatient documentation when fragmentation of intracranial subarachnoid space material is performed to facilitate removal or restore cerebrospinal fluid pathways. Accurate coding within the ICD-10-PCS 00F5 group is essential for proper inpatient reimbursement, as it captures the specific procedure performed and supports clinical documentation accuracy.

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Subarachnoid Space Fragmentation Procedure Overview

Procedures in this group involve fragmentation of material within the intracranial subarachnoid space and target the central nervous system and cranial nerves. These procedures break up or fragment solid matter in the subarachnoid space to facilitate removal or resolution of obstruction. Accurate ICD-10-PCS coding of these fragmentation procedures supports correct inpatient reimbursement and reflects the clinical services provided.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
0	Body System	Central Nervous System and Cranial Nerves
F	Operation	Fragmentation
5	Body Part	Subarachnoid Space, Intracranial

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ICD-10-PCS Code For Subarachnoid Space: Procedure Code Group Overview

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Subarachnoid Space Fragmentation Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
0	Body System	Central Nervous System and Cranial Nerves
F	Operation	Fragmentation
5	Body Part	Subarachnoid Space, Intracranial

When to Use

Use a code from this group when fragmentation of material in the intracranial subarachnoid space is performed as the documented root operation. Do not use these codes for other procedures in the intracranial region that are not fragmentation of subarachnoid space material.

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
00F50ZZ	Fragmentation in Intracranial Subarachnoid Space, Open Approach
00F53ZZ	Fragmentation in Intracranial Subarachnoid Space, Percutaneous Approach
00F54ZZ	Fragmentation in Intracranial Subarachnoid Space, Percutaneous Endoscopic Approach
00F5XZZ	Fragmentation in Intracranial Subarachnoid Space, External Approach

DRG Codes

9 rows

DRG Code	Description
023	Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator
024	Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC
025	Craniotomy and Endovascular Intracranial Procedures with MCC
026	Craniotomy and Endovascular Intracranial Procedures with CC
027	Craniotomy and Endovascular Intracranial Procedures without CC/MCC
907	Other O.R. Procedures for Injuries with MCC
908	Other O.R. Procedures for Injuries with CC
909	Other O.R. Procedures for Injuries without CC/MCC
955	Craniotomy for Multiple Significant Trauma

Typical Clinical Scenarios

An adult presents acutely after a ruptured cerebral aneurysm with symptomatic subarachnoid clot burden causing impaired cerebrospinal fluid (CSF) flow and elevated intracranial pressure. During an open craniotomy for aneurysm repair, neurosurgeons perform direct fragmentation of adherent subarachnoid clots to facilitate clot evacuation and restore CSF pathways. Fragmentation is performed through the open surgical field as part of the same operative session to improve neurologic status and prevent hydrocephalus. Typical codes: 00F50ZZ
A patient with progressive communicating hydrocephalus after subarachnoid hemorrhage is scheduled for a planned intradural procedure to relieve CSF obstruction. During a targeted percutaneous endoscopic intraventricular/subarachnoid intervention, endoscopic instruments are used to fragment organized subarachnoid deposits that are obstructing flow. The percutaneous endoscopic approach is chosen electively to minimize exposure while restoring CSF circulation. Typical codes: 00F54ZZ
A patient develops postoperative symptomatic residual subarachnoid material after a prior craniotomy where clot lysis was incomplete, leading to persistent headaches and radiographic evidence of focal subarachnoid obstruction. A percutaneous image-guided procedure is performed to fragment the residual material without reopening the cranial vault, aiming to break up deposits to facilitate CSF clearance and avoid repeat open surgery. The less invasive percutaneous approach is used due to prior operative changes and to reduce morbidity. Typical codes: 00F53ZZ

ICD-10-PCS Code For Epidural Space Intracranial: Procedure Code Group Overview

00F4-SUBDURAL-SPACE-FRAGMENTATION

ICD-10-PCS Code For Subdural Space: Procedure Code Group Overview

00F6-CEREBRAL-VENTRICLE-FRAGMENTATION

ICD-10-PCS Code For Cerebral Ventricle: Procedure Code Group Overview

00FU-SPINAL-CANAL-FRAGMENTATION

ICD-10-PCS Code For Spinal Canal: 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
00F50ZZ	Fragmentation in Intracranial Subarachnoid Space, Open Approach
00F53ZZ	Fragmentation in Intracranial Subarachnoid Space, Percutaneous Approach
00F54ZZ	Fragmentation in Intracranial Subarachnoid Space, Percutaneous Endoscopic Approach
00F5XZZ	Fragmentation in Intracranial Subarachnoid Space, External Approach

DRG Codes

9 rows

DRG Code	Description
023	Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator
024	Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC
025	Craniotomy and Endovascular Intracranial Procedures with MCC
026	Craniotomy and Endovascular Intracranial Procedures with CC
027	Craniotomy and Endovascular Intracranial Procedures without CC/MCC
907	Other O.R. Procedures for Injuries with MCC
908	Other O.R. Procedures for Injuries with CC
909	Other O.R. Procedures for Injuries without CC/MCC
955	Craniotomy for Multiple Significant Trauma

Typical Clinical Scenarios

An adult presents acutely after a ruptured cerebral aneurysm with symptomatic subarachnoid clot burden causing impaired cerebrospinal fluid (CSF) flow and elevated intracranial pressure. During an open craniotomy for aneurysm repair, neurosurgeons perform direct fragmentation of adherent subarachnoid clots to facilitate clot evacuation and restore CSF pathways. Fragmentation is performed through the open surgical field as part of the same operative session to improve neurologic status and prevent hydrocephalus. Typical codes: 00F50ZZ
A patient with progressive communicating hydrocephalus after subarachnoid hemorrhage is scheduled for a planned intradural procedure to relieve CSF obstruction. During a targeted percutaneous endoscopic intraventricular/subarachnoid intervention, endoscopic instruments are used to fragment organized subarachnoid deposits that are obstructing flow. The percutaneous endoscopic approach is chosen electively to minimize exposure while restoring CSF circulation. Typical codes: 00F54ZZ
A patient develops postoperative symptomatic residual subarachnoid material after a prior craniotomy where clot lysis was incomplete, leading to persistent headaches and radiographic evidence of focal subarachnoid obstruction. A percutaneous image-guided procedure is performed to fragment the residual material without reopening the cranial vault, aiming to break up deposits to facilitate CSF clearance and avoid repeat open surgery. The less invasive percutaneous approach is used due to prior operative changes and to reduce morbidity. Typical codes: 00F53ZZ

ICD-10-PCS Code For Epidural Space Intracranial: Procedure Code Group Overview

00F4-SUBDURAL-SPACE-FRAGMENTATION

ICD-10-PCS Code For Subdural Space: Procedure Code Group Overview

00F6-CEREBRAL-VENTRICLE-FRAGMENTATION

ICD-10-PCS Code For Cerebral Ventricle: Procedure Code Group Overview

00FU-SPINAL-CANAL-FRAGMENTATION

ICD-10-PCS Code For Spinal Canal: 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.

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ICD-10-PCS Code For Subarachnoid Space: Procedure Code Group Overview

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Subarachnoid Space Fragmentation Procedure Overview

Code Attributes

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ICD-10-PCS Code For Subarachnoid Space: Procedure Code Group Overview

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Subarachnoid Space Fragmentation Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

ICD-10-PCS Code For Subarachnoid Space: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Subarachnoid Space: Procedure Code Group Overview policy alerts

Subarachnoid Space Fragmentation Procedure Overview

Code Attributes

ICD-10-PCS Code For Subarachnoid Space: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Subarachnoid Space: Procedure Code Group Overview policy alerts

Subarachnoid Space Fragmentation Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code set covers fragmentation procedures in the intracranial subarachnoid space?

What is the clinical purpose of procedures in the 00F5 code group?

What are the approach options specified in the 00F5 code group codes?

Why is accurate coding in the 00F5 group important for inpatient care?

Which related DRGs may be associated with procedures from the 00F5 group?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code set covers fragmentation procedures in the intracranial subarachnoid space?

What is the clinical purpose of procedures in the 00F5 code group?

What are the approach options specified in the 00F5 code group codes?

Why is accurate coding in the 00F5 group important for inpatient care?

Which related DRGs may be associated with procedures from the 00F5 group?

References