0N900ZZDrainage of Skull, Open Approach

Medical and Surgical›Head and Facial Bones›Drainage

Billable / Specific Code

ICD-10-PCS 0N900ZZ

CMS Source: FY 2027 ICD-10-PCS dataset. Effective Oct 1, 2026 – Sep 30, 2027.

0N900ZZ is a billable ICD-10-PCS procedure code for Drainage of Skull, Open Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027).

Code Identity

ICD-10-PCS Code

0N900ZZ

Billable Status

Yes — Valid for Submission

Code Describes

Drainage of Skull, Open Approach

Short Description

Drainage of Skull, Open Approach

Same as the full description in the CMS dataset.

Parent Code

0N9

PCS Table Breakdown

Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.

Position	Designation	Value	Meaning
1	Section	0	Medical and Surgical
2	Body System	N	Head and Facial Bones
3	Operation	9	Drainage
4	BodyPart	0	Skull
5	Approach	0	Open
6	Device	Z	No Device
7	Qualifier	Z	No Qualifier

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Questions About 0N900ZZ

Is 0N900ZZ a billable code?

Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Drainage of Skull, Open Approach on inpatient claims from October 1, 2026 through September 30, 2027.

What do the characters in 0N900ZZ mean?

The code breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character N is the Body System (Head and Facial Bones); the 3rd character 9 is the Operation (Drainage); the 4th character 0 is the BodyPart (Skull); the 5th character 0 is the Approach (Open); the 6th character Z is the Device (No Device); the 7th character Z is the Qualifier (No Qualifier).