5A05221Extracorporeal Hyperbaric Oxygenation, Continuous
- Billable / Specific Code
5A05221 is a billable ICD-10-PCS procedure code for Extracorporeal Hyperbaric Oxygenation, Continuous. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). The root operation Assistance involves taking over a portion of a physiological function by extracorporeal means. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Hyperbaric oxygen therapy.
Code Identity
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 | 5 | Extracorporeal or Systemic Assistance and Performance |
| 2 | Body System | A | Physiological Systems |
| 3 | Operation | 0 | Assistance |
| 4 | BodySystem | 5 | Circulatory |
| 5 | Duration | 2 | Continuous |
| 6 | Function | 2 | Oxygenation |
| 7 | Qualifier | 1 | Hyperbaric |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code oxygenation of the hyperbaric, open the FY 2027 ICD-10-PCS Alphabetic Index at Oxygenation, then the subterm Hyperbaric. The index leads to table 5A0, where the duration, function and qualifier values shown in the breakdown above complete the seven-character code 5A05221.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 5A05221
Is 5A05221 a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Extracorporeal Hyperbaric Oxygenation, Continuous on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 5A05221 mean?
The code breaks down character by character: the 1st character 5 is the Section (Extracorporeal or Systemic Assistance and Performance); the 2nd character A is the Body System (Physiological Systems); the 3rd character 0 is the Operation (Assistance); the 4th character 5 is the BodySystem (Circulatory); the 5th character 2 is the Duration (Continuous); the 6th character 2 is the Function (Oxygenation); the 7th character 1 is the Qualifier (Hyperbaric).
What is the ICD-9-PCS equivalent of 5A05221?
Under the General Equivalence Mappings, Extracorporeal Hyperbaric Oxygenation, Continuous crosswalks to ICD-9-PCS 93.95 (Hyperbaric oxygenation). The mapping is approximate, so confirm it fits the documentation.
