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    v1.0.28
    OpenPayerBilling CodesOther bacterial diseasesICD-10-CM a33-tetanus-neonatorum
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    ICD-10-CM Code For Tetanus Neonatorum: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group A33 includes diagnoses for neonatal tetanus, including infections originating from the umbilical stump and resulting generalized tetanic states in newborns. These ICD-10-CM diagnosis codes are used to document clinical scenarios of neonatal tetanus, capturing severity, neurologic involvement, and complications related to perinatal wound infections. Accurate coding within the ICD-10-CM A33 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM A33: Tetanus Neonatorum Overview

    The ICD-10-CM A33 group captures diagnoses for tetanus occurring in newborns, typically resulting from infection of the umbilical stump or other perinatal wounds. These conditions affect the nervous system and can cause generalized muscle spasms and respiratory compromise. Accurate coding matters for clinical records, surveillance, and proper reimbursement for neonatal infectious disease care.

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    When to Use

    Use a code from this group when documenting tetanus in a neonate with clinical signs such as trismus, generalized spasms, or respiratory compromise attributed to perinatal infection. These codes apply when the clinical record indicates neonatal onset and the diagnosis of tetanus is confirmed or strongly suspected.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    A33Tetanus neonatorum

    DRG Codes

    1 rows

    DRG CodeDescription
    794Neonate with Other Significant Problems

    Typical Clinical Scenarios

    • A newborn born at home with unclean delivery conditions presents at 5–10 days of life with poor feeding, difficulty sucking, marked trismus (lockjaw), generalized muscle rigidity, and episodes of opisthotonus; symptoms began after the umbilical cord was cut with nonsterile instruments and progressed over several days, prompting emergency transport to the neonatal intensive care unit for supportive care. A diagnosis from this group is assigned because the clinical picture is classic for neonatal tetanus following cord contamination. Typical codes: A33
    • An infant brought to the emergency department after onset of irritability, spasms, and apnea during the first two weeks of life following delayed cord healing and local cord infection; the infant requires airway monitoring and may receive tetanus immunoglobulin and wound care while clinicians document maternal and perinatal risk factors. The diagnosis from this group is used to capture tetanus neonatorum as the primary infectious cause of the neonatal spasms and autonomic instability. Typical codes: A33
    • A neonate admitted to the hospital with progressive difficulty feeding and failure to thrive in which laboratory testing is unremarkable but the history reveals delivery in a resource-limited setting without sterile cord care; the treating team documents neonatal tetanus as a comorbidity complicating the infant’s hospital course and plans for supportive management and public health reporting. The diagnostic code from this group is applied to record the impact of tetanus neonatorum on the infant’s clinical status and care needs. Typical codes: A33

    Related Codes

    A30-LEPROSY-HANSEN-S-DISEASE

    ICD-10-CM Code For Leprosy Hansen's Disease: Group Overview

    A31-INFECTION-DUE-TO-OTHER-MYCOBACTERIA

    ICD-10-CM Code For Infection Due To Other Mycobacteria: Group Overview

    A32-LISTERIOSIS

    ICD-10-CM Code For Listeriosis: Group Overview

    A34-OBSTETRICAL-TETANUS

    ICD-10-CM Code For Obstetrical Tetanus: Group Overview

    A35-OTHER-TETANUS

    ICD-10-CM Code For Other Tetanus: Group Overview

    A36-DIPHTHERIA

    ICD-10-CM Code For Diphtheria: Group Overview

    A37-WHOOPING-COUGH

    ICD-10-CM Code For Whooping Cough: Group Overview

    A38-SCARLET-FEVER

    ICD-10-CM Code For Scarlet Fever: Group Overview

    A39-MENINGOCOCCAL-INFECTION

    ICD-10-CM Code For Meningococcal Infection: Group Overview

    A41-OTHER-SEPSIS

    ICD-10-CM Code For Other Sepsis: Group Overview

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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