4A12X9Z - Monitoring of Cardiac Output, External…

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	4	Measurement and Monitoring
2	Body System	A	Physiological Systems
3	Operation	1	Monitoring
4	BodySystem	2	Cardiac
5	Approach	X	External
6	Function/Device	9	Output
7	Qualifier	Z	No Qualifier

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 4A12X9Z under the General Equivalence Mappings.

89.67

Approximate match.

89.68

Approximate match.

Similar Procedure Codes

Filter related codes list:

4A1204ZMonitoring of Cardiac Electrical Activity, Open Approach 4A1209ZMonitoring of Cardiac Output, Open Approach 4A120CZMonitoring of Cardiac Rate, Open Approach 4A120FZMonitoring of Cardiac Rhythm, Open Approach 4A120HZMonitoring of Cardiac Sound, Open Approach 4A1234ZMonitoring of Cardiac Electrical Activity, Percutaneous Approach 4A1239ZMonitoring of Cardiac Output, Percutaneous Approach 4A123CZMonitoring of Cardiac Rate, Percutaneous Approach 4A123FZMonitoring of Cardiac Rhythm, Percutaneous Approach 4A123HZMonitoring of Cardiac Sound, Percutaneous Approach 4A1274ZMonitoring of Cardiac Electrical Activity, Via Natural or Artificial Opening 4A1279ZMonitoring of Cardiac Output, Via Natural or Artificial Opening 4A127CZMonitoring of Cardiac Rate, Via Natural or Artificial Opening 4A127FZMonitoring of Cardiac Rhythm, Via Natural or Artificial Opening 4A127HZMonitoring of Cardiac Sound, Via Natural or Artificial Opening 4A1284ZMonitoring of Cardiac Electrical Activity, Via Natural or Artificial Opening Endoscopic 4A1289ZMonitoring of Cardiac Output, Via Natural or Artificial Opening Endoscopic 4A128CZMonitoring of Cardiac Rate, Via Natural or Artificial Opening Endoscopic 4A128FZMonitoring of Cardiac Rhythm, Via Natural or Artificial Opening Endoscopic 4A128HZMonitoring of Cardiac Sound, Via Natural or Artificial Opening Endoscopic 4A12X45Monitoring of Cardiac Electrical Activity, Ambulatory, External Approach 4A12X4ZMonitoring of Cardiac Electrical Activity, External Approach 4A12XCZMonitoring of Cardiac Rate, External Approach 4A12XFZMonitoring of Cardiac Rhythm, External Approach 4A12XHZMonitoring of Cardiac Sound, External Approach 4A12XM4Monitoring of Cardiac Stress, External Approach 4A12XSHMonitoring of Cardiac Vascular Perfusion using Indocyanine Green Dye, External Approach

Questions About 4A12X9Z

Is 4A12X9Z a billable code?

Yes. 4A12X9Z is a complete seven-character ICD-10-PCS code, specific enough to report Monitoring of Cardiac Output, External Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 4A12X9Z mean?

4A12X9Z breaks down character by character: the 1st character 4 is the Section (Measurement and Monitoring); the 2nd character A is the Body System (Physiological Systems); the 3rd character 1 is the Operation (Monitoring); the 4th character 2 is the BodySystem (Cardiac); the 5th character X is the Approach (External); the 6th character 9 is the Function/Device (Output); the 7th character Z is the Qualifier (No Qualifier).

What is the ICD-9-PCS equivalent of 4A12X9Z?

Under the General Equivalence Mappings, Monitoring of Cardiac Output, External Approach crosswalks to ICD-9-PCS 89.67 and 89.68. The mapping is approximate, so confirm it fits the documentation.

4A12X9ZMonitoring of Cardiac Output, External Approach

Code Identity