2025 ICD-10-CM Diagnosis Code A33

by

Tetanus neonatorum

  • A33 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM A33 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of A33 – other international versions of ICD-10 A33 may differ.

ICD-10-CM Coding Rules

  • A33 is applicable to newborns of age 0 years.

The following code(s) above A33 contain annotation back-references

 that may be applicable to A33:

  • A00-B99  Certain infectious and parasitic diseases

ICD-10-CM A33 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 794 Neonate with other significant problems

Convert A33 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Code annotations containing back-references to A33:

  • Type 1 Excludes: A35, P38
  • Type 2 Excludes: P37

Diagnosis Index entries containing back-references to A33: