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ICD 10 Code 0N940ZX

Drainage of Left Parietal Bone, Open Approach, Diagnostic

0N940ZX is a valid billable ICD-10 procedure code for Drainage of Left Parietal Bone, Open Approach, Diagnostic. It is found in the 2025 version of the ICD-10 Procedure Coding System (PCS) and can be used in all HIPAA-covered transactions from Oct 01, 2024 - Sep 30, 2025.

Drainage involves:
Taking or letting out fluids and/or gases from a body part. The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies

Open approach involves:
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure

Drainage includes:

  • Thoracentesis, incision and drainage
MS-DRG - Medicare Severity-Diagnosis Related Group
  • MDC 01 Diseases & Disorders of the Nervous System
    Craniotomy with Major Device Implant or Acute Complex CNS PDX
    • DRG 023 - CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PDX WITH MCC OR CHEMOTHERAPY IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR
    • DRG 024 - CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PDX WITHOUT MCC
  • MDC 01 Diseases & Disorders of the Nervous System
    Craniotomy and Endovascular Intracranial Procedures
    • DRG 025 - CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH MCC
    • DRG 026 - CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH CC
    • DRG 027 - CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITHOUT CC/MCC
  • MDC 08 Diseases & Disorders of the Musculoskeletal System & Connective Tissue
    Biopsies of Musculoskeletal System and Connective Tissue
    • DRG 477 - BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC
    • DRG 478 - BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH CC
    • DRG 479 - BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT CC/MCC
  • MDC 10 Endocrine, Nutritional & Metabolic Diseases & Disorders
    Other Endocrine, Nutritional and Metabolic Procedures
    • DRG 628 - OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITH MCC
    • DRG 629 - OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITH CC
    • DRG 630 - OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITHOUT CC/MCC

ICD-10-PCS code structure for 0N940ZX — See Table View

1: Section 0 Medical and Surgical
2: Body System N Head and Facial Bones
3: Root Operation 9 Drainage
4: Body Part 4 Parietal Bone, Left
5: Approach 0 Open
6: Device Z No Device
7: Qualifier X Diagnostic

See also

  • The ICD-10-PCS Index of common procedure terms.
  • Medical and Surgical terms in the ICD-10-PCS Definitions table. These definitions may also provide additional explanation and/or examples within this section.
  • The ICD-10-PCS Device Aggregation Table containing entries that correlate a specific ICD-10-PCS device value with a general device value to be used in tables containing only general device values.