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HCPCS Level II Current in October 2026

M1161

Patient had anaphylaxis due to the tetanus, diphtheria or pertussis vaccine any time on or before the patient's 13th birthday

Release
October 2026
Effective
Official source (opens in a new tab)

Version History

How M1161 appears in each release imported from the official files, newest first.

  1. October 2026 Effective

    Current

    Patient had anaphylaxis due to the tetanus, diphtheria or pertussis vaccine any time on or before the patient's 13th birthday

  2. July 2026 Effective

    Unchanged

    Patient had anaphylaxis due to the tetanus, diphtheria or pertussis vaccine any time on or before the patient's 13th birthday

  3. April 2026 Effective

    Unchanged

    Patient had anaphylaxis due to the tetanus, diphtheria or pertussis vaccine any time on or before the patient's 13th birthday

  4. January 2026 Effective

    Unchanged

    Patient had anaphylaxis due to the tetanus, diphtheria or pertussis vaccine any time on or before the patient's 13th birthday

Data Source

Code information on this page is derived from the October 2026 HCPCS Level II files published by CMS.

Release
October 2026
Effective
Source file
october-2026-alpha-numeric-hcpcs-file.zip

Official HCPCS Level II source files (opens in a new tab)

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