ICD-10-CM Codes
P00-P96
P70-P74
P74-
2023 ICD-10-CM Diagnosis Code P74.6

2023 ICD-10-CM Diagnosis Code P74.6

Transitory hyperammonemia of newborn

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

Code on Newborn Record

P74.6 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM P74.6 became effective on October 1, 2022.
This is the American ICD-10-CM version of P74.6 - other international versions of ICD-10 P74.6 may differ.

ICD-10-CM Coding Rules

P74.6 should be used on the newborn record - not on the maternal record.

The following code(s) above P74.6 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to P74.6:

P00-P96
2023 ICD-10-CM Range P00-P96
Certain conditions originating in the perinatal period
Includes
- 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
Note
- Codes from this chapter are for use on newborn records only, never on maternal records
Type 2 Excludes
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- tetanus neonatorum (A33)
Certain conditions originating in the perinatal period
P70-P74
2023 ICD-10-CM Range P70-P74
Transitory endocrine and metabolic disorders specific to newborn
Includes
- transitory endocrine and metabolic disturbances caused by the infant's response to maternal endocrine and metabolic factors, or its adjustment to extrauterine environment
Transitory endocrine and metabolic disorders specific to newborn

Approximate Synonyms

Neonatal transient hyperammonemia
Transient hyperammonemia in infancy

ICD-10-CM P74.6 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

794 Neonate with other significant problems

Convert P74.6 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Code annotations containing back-references to P74.6:

Type 1 Excludes: E72.20

ICD-10-CM Diagnosis Code E72.20
Disorder of urea cycle metabolism, unspecified
Applicable To
- Hyperammonemia
Type 1 Excludes
- hyperammonemia-hyperornithinemia-homocitrullinemia syndrome E72.4
- transient hyperammonemia of newborn (P74.6)

Diagnosis Index entries containing back-references to P74.6:

Disturbance(s) - see also Disease
- electrolyte - see also Imbalance, electrolyte
  - newborn, transitory P74.49
    ICD-10-CM Diagnosis Code P74.49
    Other transitory electrolyte disturbance of newborn
    2019 - New Code 2020 2021 2022 2023 Billable/Specific Code Code on Newborn Record
    - hyperammonemia P74.6

ICD-10-CM Codes Adjacent To P74.6

P74.3 Disturbances of potassium balance of newborn

P74.31 Hyperkalemia of newborn

P74.32 Hypokalemia of newborn

P74.4 Other transitory electrolyte disturbances of newborn

P74.41 Alkalosis of newborn

P74.42 Disturbances of chlorine balance of newborn

P74.421 Hyperchloremia of newborn

P74.422 Hypochloremia of newborn

P74.49 Other transitory electrolyte disturbance of newborn

P74.5 Transitory tyrosinemia of newborn

P74.6 Transitory hyperammonemia of newborn

P74.8 Other transitory metabolic disturbances of newborn

P74.9 Transitory metabolic disturbance of newborn, unspecified

P76 Other intestinal obstruction of newborn

P76.0 Meconium plug syndrome

P76.1 Transitory ileus of newborn

P76.2 Intestinal obstruction due to inspissated milk

P76.8 Other specified intestinal obstruction of newborn

P76.9 Intestinal obstruction of newborn, unspecified

P77 Necrotizing enterocolitis of newborn

P77.1 Stage 1 necrotizing enterocolitis in newborn

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code P74.6

Transitory hyperammonemia of newborn

Certain conditions originating in the perinatal period

Transitory endocrine and metabolic disorders specific to newborn

Disorder of urea cycle metabolism, unspecified

Other transitory electrolyte disturbance of newborn