DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

A33 diagnosis code · Billable category · FY2027

A33 Tetanus neonatorum

  • Billable
  • MCC
  • POA reported

A33 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

CC / MCC
MCC
MS-DRG
794
HCC V28
–
POA
Reported
Code Editor
Newborn
Index entries
4

Instructions

Notes that also apply

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Omphalitis (congenital) (newborn)tetanus → A33
  • Tetanus, tetanic (cephalic) (convulsions)neonatorum → A33
  • Trismusneonatorum → A33
  • Trismusnewborn → A33

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for A33
CC / MCCMCC
PDX exclusion list0085 (18 codes)
Appendix BMDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 794 (Neonate with Other Significant Problems…)
Code EditorAge conflict: newborn diagnosis (age 0)
POAReported
HCC V28–

MCC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy