4A197CZMonitoring of Respiratory Rate, Via Natural or Artificial Opening

Measurement and Monitoring›Physiological Systems›Monitoring
  • Billable / Specific Code
ICD-10-PCS 4A197CZ
CMS Source: FY 2027 ICD-10-PCS dataset. Effective Oct 1, 2026 – Sep 30, 2027.FacebookXLinkedInPrint

4A197CZ is a billable ICD-10-PCS procedure code for Monitoring of Respiratory Rate, Via Natural or Artificial Opening. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). The root operation Monitoring involves determining the level of a physiological or physical function repetitively over a period of time. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Pulmonary function tests.

Code Identity

ICD-10-PCS Code
4A197CZ
Billable Status
Yes — Valid for Submission
Code Describes
Monitoring of Respiratory Rate, Via Natural or Artificial Opening
Short Description
Monitoring of Respiratory Rate, Via Opening
Parent Code
4A1

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.

PositionDesignationValueMeaning
1Section4Measurement and Monitoring
2Body SystemAPhysiological Systems
3Operation1Monitoring
4BodySystem9Respiratory
5Approach7Via Natural or Artificial Opening
6Function/DeviceCRate
7QualifierZNo Qualifier

In the ICD-10-PCS Alphabetic Index

These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:

Monitoring, Respiratory, Flow
Leads to this code's table
Monitoring, Respiratory, Rate
Leads to this code's table
Monitoring, Respiratory, Volume
Leads to this code's table
Monitoring, Respiratory, Capacity
Leads to this code's table
Monitoring, Respiratory, Resistance
Leads to this code's table
SPY PINPOINT fluorescence imaging system
Leads to this code's table
Intravascular fluorescence angiography (IFA)
Leads to this code's table
SPY system intravascular fluorescence angiography
Leads to this code's table
Testing, Neurophysiologic monitoring, intra-operative
Leads to this code's table
Angiocardiography, SPY system intravascular fluorescence
Leads to this code's table
Assessment, Intravascular perfusion, using indocyanine green (ICG) dye
Leads to this code's table

To code monitoring of the flow respiratory, open the FY 2027 ICD-10-PCS Alphabetic Index at Monitoring, then the subterms Respiratory, Flow. The index leads to table 4A1, where the approach, Function/Device and qualifier values shown in the breakdown above complete the seven-character code 4A197CZ.

Browse the full ICD-10-PCS Alphabetic Index →

Clinical Classification (CCSR)

AHRQ groups this procedure code into these clinical categories.

MAM014
Pulmonary function tests
Clinical domain: Measurement and Monitoring

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.

89.38
Other nonoperative respiratory measurements
Approximate match.

Similar Procedure Codes

Questions About 4A197CZ

Is 4A197CZ a billable code?

Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Monitoring of Respiratory Rate, Via Natural or Artificial Opening on inpatient claims from October 1, 2026 through September 30, 2027.

What do the characters in 4A197CZ mean?

The code 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 9 is the BodySystem (Respiratory); the 5th character 7 is the Approach (Via Natural or Artificial Opening); the 6th character C is the Function/Device (Rate); the 7th character Z is the Qualifier (No Qualifier).

What is the ICD-9-PCS equivalent of 4A197CZ?

Under the General Equivalence Mappings, Monitoring of Respiratory Rate, Via Natural or Artificial Opening crosswalks to ICD-9-PCS 89.38 (Other nonoperative respiratory measurements). The mapping is approximate, so confirm it fits the documentation.