DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

P94 Disorders of muscle tone of newborn

  • Header · not billable

P94 is not billable. The category heads 5 billable codes in FY2027: the 5 codes directly below it.

Index → code

  • Babyfloppy (syndrome) → P94.2
  • Atonia, atony, atoniccongenital → P94.2
  • Floppybaby syndrome (nonspecific) → P94.2

Where it sits

  1. Chapter 16 Certain conditions originating in the perinatal period (P00-P96)
  2. P90-P96 Other disorders originating in the perinatal period (P90-P96)
  3. P94 Disorders of muscle tone of newborn
Billable codes
5
Subdivisions
5
CC / MCC codes
1 / 0
HCC V28 codes
0
New FY2027
0
Index entries
10

Codes in P94

  1. P94.0
    Transient neonatal myasthenia gravis
    BillableCC
    Excludes1 1

    Excludes1

    • myasthenia gravis (G70.0) G70.0
  2. P94.1
    Congenital hypertonia
    Billable
  3. P94.2
    Congenital hypotonia
    Billable
    Inclusion terms 1

    Inclusion terms

    • Floppy baby syndrome, unspecified
  4. P94.8
    Other disorders of muscle tone of newborn
    Billable
  5. P94.9
    Disorder of muscle tone of newborn, unspecified
    Billable

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

Notes that also apply

Chapter 16 instructions (Notes 1, Includes 1, Excludes2 5): printed on the chapter 16 page.

Index entries

  • Hypertony, hypertonia, hypertonicitycongenital → P94.1
  • Atonia, atony, atoniccongenital → P94.2
  • Babyfloppy (syndrome) → P94.2
  • Floppybaby syndrome (nonspecific) → P94.2
  • Hypotonia, hypotonicity, hypotonycongenital (benign) → P94.2
  • Pseudoparalysisatonic, congenital → P94.2
  • Myastheniagravisneonatal, transient → P94.0
  • Syndromefloppybaby → P94.2
  • Disorder (of)muscletone, newborn → P94.9
  • Disorder (of)muscletone, newbornspecified NEC → P94.8

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

Hierarchy