2027 ICD-10-CM Diagnosis Code P94.2Congenital hypotonia
ICD-10-CM Codes›P00–P96›P90-P96›P94
- Billable — Valid for Submission
- Not Chronic
P94.2 is a billable ICD-10-CM diagnosis code for congenital hypotonia. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 794. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified perinatal conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Atypical hypotonia cystinuria syndrome
- Benign congenital hypotonia
- Congenital cataract, progressive muscular hypotonia, hearing loss, developmental delay syndrome
- Congenital contracture of limbs and face, hypotonia, developmental delay syndrome
- Congenital hypoplasia of bone of radius and/or ulna
- Congenital hypoplasia of ulna
- Cystinuria
- Cystinuria, type 1
- Facial dysmorphism, global developmental delay, hypotonia, polymicrogyria syndrome
- Growth and developmental delay, hypotonia, vision impairment, lactic acidosis syndrome
- Hypertrophic cardiomyopathy with hypotonia and lactic acidosis syndrome
- Hypertrophic mitochondrial cardiomyopathy
- Hypotonia, speech impairment, severe cognitive delay syndrome
- Infantile hypotonia, oculomotor anomalies, hyperkinetic movements, developmental delay syndrome
- Intellectual disability, hypotonia, brachycephaly, pyloric stenosis, cryptorchidism syndrome
- Intellectual disability, seizures, hypotonia, ophthalmologic, skeletal anomalies syndrome
- Left ventricular myocardial noncompaction cardiomyopathy
- Lethal left ventricular non-compaction, seizures, hypotonia, cataract, developmental delay syndrome
- Lethal pontocerebellar hypoplasia, hypotonia, respiratory insufficiency syndrome
- Multiple congenital anomalies, hypotonia, seizures syndrome
- Multiple congenital anomalies, hypotonia, seizures syndrome type 2
- Neonatal flaccidity
- Neonatal hypotonia
- Neonatal muscle tone disorder
- Neonatal neuromuscular disorder
- Postnatal microcephaly, infantile hypotonia, spastic diplegia, dysarthria, intellectual disability syndrome
- Puerto Rican infant hypotonia syndrome
- Respiratory insufficiency syndrome of newborn
- Severe hypotonia, psychomotor developmental delay, strabismus, cardiac septal defect syndrome
- Severe intellectual disability, hypotonia, strabismus, coarse face, planovalgus syndrome
- Short ulna, dysmorphism, hypotonia, intellectual disability syndrome
- Ventricular myocardial noncompaction cardiomyopathy
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to P94.2: its own notes plus those printed at Chapter 16. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Floppy baby syndrome, unspecified
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- Codes from this chapter are for use on newborn records only, never on maternal records
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
floppy (syndrome) P94.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Muscle Disorders
Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert P94.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About P94.2Overview
What is the ICD-10 code for congenital hypotonia?
The ICD-10-CM code for congenital hypotonia is P94.2 (sometimes written as P942). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is P94.2 (Disorders of muscle tone of newborn) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report congenital hypotonia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does P94.2 group to?
When congenital hypotonia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 794 (neonate with Other Significant Problems), which carries a relative weight of 1.4934. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of P94.2?
Under the General Equivalence Mappings, congenital hypotonia converts to ICD-9-CM 779.89 (perinatal condition NEC). The mapping is approximate, so confirm the match fits the documentation.
