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Air Force · AFSC history

4H0X1 Cardiopulmonary Laboratory

AFSC 4H0X1 was retitled from Cardiopulmonary Laboratory to Respiratory Care Practitioner without changing its code. Its duties, responsibilities, and specialty qualifications were also revised.

The directory also lists 4H0X1 Respiratory Care Practitioner. Current service use is not established for this directory entry.

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Codes named in this history

Listed in today's directory

These codes have directory pages; their current use has not been reviewed, so no current claim is made here.

Documented history

Cardiopulmonary Laboratory

The directory and its change guide are dated 31 October 2020, but the Summary of Revisions gives 30 April 2020 as the implementation date. No effective date is stated specifically for this rename, so the conflicting dates leave its precise timing unclear.

  • The specific changes to duties and qualifications are not described.
Source extraction notes

CS&CIG source assertion (N/A): 1. The specialty description is revised to update the duties and responsibilities and specialty qualifications. 2. The AFSC is retitled. Conversion instructions: MPS: 4, 5 AFPC: 4, 5, 9 Manpower: 4, 5, 10 The identifier is unchanged; a self-successor records the source-stated occupational retitle.

Source documents (2)

Reviewed September 23, 2026 against references 2 and 3.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.