Tetanus neonatorum (A33) ICD-10-CM
The A33 code range covers tetanus neonatorum with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the A33 Range 1 codes · 1 billable
- A33 Tetanus neonatorum
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A33 range.
Tetanus
A disease caused by tetanospasmin, a powerful protein toxin produced by CLOSTRIDIUM TETANI. Tetanus usually occurs after an acute injury, such as a puncture wound or laceration. Generalized tetanus, the most common form, is characterized by tetanic muscular contractions and hyperreflexia. Localized tetanus presents itself as a mild condition with manifestations restricted to muscles near the wound. It may progress to the generalized form.
Trismus
Spasmodic contraction of the masseter muscle resulting in forceful jaw closure. This may be seen with a variety of diseases, including TETANUS, as a complication of radiation therapy, trauma, or in association with neoplastic conditions.
About the A33 Code Range
ICD-10 code A33tetanus neonatorum, a serious bacterial infection affecting newborns. This code is used to document cases of tetanus occurring in newborn infants, helping healthcare providers and coders classify and report this particular perinatal infection accurately.
Tetanus neonatorum, also known as tetanus omphalitis, localized tetanus, or simply tetanus with trismus, involves infection that typically begins around the umbilical stump and can cause muscle stiffness, spasms, and the characteristic inability to open the jaw (trismus). Other related terms found in medical records, such as autonomic disorder due to tetanus or tetanic opisthotonus, are encompassed under this code. Using the ICD-10 code for tetanus neonatorum (A33) ensures consistent classification of this dangerous neonatal bacterial condition, aiding in proper treatment documentation and epidemiological tracking.
Questions About This Page
How many billable codes are in the A33 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the A33 range classify?
The range classifies tetanus neonatorum. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
