ICD-10-CM Code P36.9

Bacterial sepsis of newborn, unspecified

Version 2020 Billable Code

Valid for Submission

P36.9 is a billable code used to specify a medical diagnosis of bacterial sepsis of newborn, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code P36.9 might also be used to specify conditions or terms like acquired neutropenia, acquired neutropenia in newborn, acute kidney injury due to sepsis, acute lung injury, bacterial sepsis, bacterial sepsis of newborn, etc

Short Description:Bacterial sepsis of newborn, unspecified
Long Description:Bacterial sepsis of newborn, unspecified

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code P36.9 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acquired neutropenia
  • Acquired neutropenia in newborn
  • Acute kidney injury due to sepsis
  • Acute lung injury
  • Bacterial sepsis
  • Bacterial sepsis of newborn
  • Clinical infection
  • Clinical sepsis
  • Early-onset neonatal sepsis
  • Indirect acute lung injury
  • Infection of blood and lymphatic system
  • Infection of bloodstream
  • Infectious disorder of the fetus
  • Intrauterine sepsis of fetus
  • Late-onset neonatal sepsis
  • Neutropenia
  • Perinatal sepsis
  • Sepsis
  • Sepsis due to urinary tract infection
  • Sepsis of the newborn
  • Sepsis with cutaneous manifestations
  • Sepsis without acute organ dysfunction
  • Sepsis-associated gastrointestinal hemorrhage
  • Sepsis-associated lung injury
  • Sepsis-related gastrointestinal lesions
  • Severe sepsis with acute organ dysfunction due to Gram-positive bacteria
  • Systemic inflammatory response syndrome without organ dysfunction
  • Transient neonatal neutropenia
  • Transient neonatal neutropenia due to neonatal bacterial sepsis
  • Transient respiratory distress with sepsis

Convert P36.9 to ICD-9

  • 771.81 - NB septicemia [sepsis] (Approximate Flag)

Code Classification

  • Certain conditions originating in the perinatal period (P00–P96)
    • Infections specific to the perinatal period (P35-P39)
      • Bacterial sepsis of newborn (P36)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Bacterial Infections

Bacteria are living things that have only one cell. Under a microscope, they look like balls, rods, or spirals. They are so small that a line of 1,000 could fit across a pencil eraser. Most bacteria won't hurt you - less than 1 percent of the different types make people sick. Many are helpful. Some bacteria help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese.

But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.

Antibiotics are the usual treatment. When you take antibiotics, follow the directions carefully. Each time you take antibiotics, you increase the chances that bacteria in your body will learn to resist them causing antibiotic resistance. Later, you could get or spread an infection that those antibiotics cannot cure.

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Sepsis is a serious illness. It happens when your body has an overwhelming immune response to a bacterial infection. The chemicals released into the blood to fight the infection trigger widespread inflammation. This leads to blood clots and leaky blood vessels. They cause poor blood flow, which deprives your body's organs of nutrients and oxygen. In severe cases, one or more organs fail. In the worst cases, blood pressure drops and the heart weakens, leading to septic shock.

Anyone can get sepsis, but the risk is higher in

  • People with weakened immune systems
  • Infants and children
  • Adults 65 and older
  • People with chronic illnesses, such as diabetes, AIDS, cancer, and kidney or liver disease
  • People suffering from a severe burn or physical trauma

Common symptoms of sepsis are fever, chills, rapid breathing and heart rate, rash, confusion, and disorientation. Doctors diagnose sepsis using a blood test to see if the number of white blood cells is abnormal. They also do lab tests that check for signs of infection.

People with sepsis are usually treated in hospital intensive care units. Doctors try to treat the infection, sustain the vital organs, and prevent a drop in blood pressure. Many patients receive oxygen and intravenous (IV) fluids. Other types of treatment, such as respirators or kidney dialysis, may be necessary. Sometimes, surgery is needed to clear up an infection.

NIH: National Institute of General Medical Sciences

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Uncommon Infant and Newborn Problems

It can be scary when your baby is sick, especially when it is not an everyday problem like a cold or a fever. You may not know whether the problem is serious or how to treat it. If you have concerns about your baby's health, call your health care provider right away.

Learning information about your baby's condition can help ease your worry. Do not be afraid to ask questions about your baby's care. By working together with your health care provider, you make sure that your baby gets the best care possible.

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