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Official Description

Necropsy (autopsy), gross and microscopic; infant with brain

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

A necropsy, commonly referred to as an autopsy, is a thorough examination performed on deceased infants, specifically those aged between 1 to 12 months. This procedure involves both gross and microscopic evaluations, with a particular focus on the brain. The primary aim of conducting a necropsy is to ascertain the cause of death and to gather critical information that may aid in understanding any underlying medical conditions. For infants, the examination includes a comprehensive external assessment, which may involve capturing full body and facial photographs when deemed appropriate. Additionally, radiographic examinations can be utilized to detect any new or healing bone fractures, assess skeletal dysplasia, identify metaphysitis, and recognize cerebral calcifications, as well as to estimate the maturation of bones at ossification centers. During the necropsy, the infant's body is meticulously weighed and measured, with specific attention given to various dimensions such as crown to heel, crown to rump, head circumference, and foot length. A detailed examination of the head is conducted to identify any abrasions, cephalohematoma, caput succedaneum, bulging fontanelles, and the condition of the sutures. The facial features are documented, and the skin is examined for any abnormalities. The shape of the chest is noted, along with any presence of crepitus, while the abdomen is assessed for its shape and size, including the presence of conditions such as omphalocele or gastroschisis. If the umbilical cord, placenta, and membranes are still attached, they are examined for signs of umbilical hypercoiling or knots, chorioamnionitis, and infarction. The genitalia are inspected to determine the infant's gender and to check the patency of the anus, vagina, and urethra. The back and spine are also scrutinized for any neural tube defects, pigmented lesions, or hair tufts. Following the external examination, a gross examination of the internal organs is performed, adhering to techniques outlined in related CPT codes. This is complemented by a microscopic examination, where fluid and tissue specimens collected during the autopsy are placed onto slides for microscopic review, cultured for pathogens, and tested for genetic diseases, metabolic disorders, or the presence of drugs or chemicals. Upon completion of the autopsy, the body cavity is lined with appropriate material, the internal organs are sealed in a plastic bag and returned to the body, and the abdomen and chest flaps are carefully re-approximated and closed.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The necropsy (autopsy) procedure is indicated for the following conditions:

  • Infant Death Investigation A necropsy is performed to determine the cause of death in infants aged 1 to 12 months.
  • Newborn Examination This procedure is also applicable for newborns (birth to 1 month) and stillborns (fetuses with a gestational age of 20 weeks or more) to investigate potential causes of death.

2. Procedure

The necropsy procedure involves several detailed steps to ensure a comprehensive examination of the infant's body.

  • Step 1: External Examination The procedure begins with a thorough external examination of the infant's body. This includes taking full body and facial photographs, if appropriate, to document any visible abnormalities. The body is assessed for overall condition, and specific features such as the shape of the chest and abdomen are noted. Radiographic examinations may be performed to identify any new or healing bone fractures, skeletal dysplasia, metaphysitis, and cerebral calcifications, as well as to estimate bone maturation at ossification centers.
  • Step 2: Measurement and Weighing The infant's body is weighed and measured, with specific measurements taken from crown to heel, crown to rump, head circumference, and foot length. These measurements are crucial for understanding the growth and development of the infant.
  • Step 3: Head Examination A detailed examination of the head is conducted, looking for signs of abrasions, cephalohematoma, caput succedaneum, bulging fontanelles, and the condition of the sutures. This step is vital for identifying any trauma or abnormalities that may have contributed to the infant's death.
  • Step 4: Facial and Skin Assessment The facial features are carefully noted, and the skin is examined for any abnormalities or lesions that may provide insight into the infant's health status prior to death.
  • Step 5: Abdominal Examination The shape and size of the abdomen are assessed, with particular attention given to the presence of conditions such as omphalocele or gastroschisis, which can indicate congenital anomalies.
  • Step 6: Examination of Cord, Placenta, and Membranes If the umbilical cord, placenta, and membranes are still attached, they are examined for signs of umbilical hypercoiling or knots, chorioamnionitis, and infarction, which can provide critical information regarding the pregnancy and delivery.
  • Step 7: Genitalia and Anus Examination The genitalia are examined to determine the infant's gender, and the patency of the anus, vagina, and urethra is assessed to rule out any congenital defects.
  • Step 8: Back and Spine Examination The back and spine are examined for neural tube defects, pigmented lesions, and hair tufts, which can indicate underlying genetic or developmental issues.
  • Step 9: Gross Examination of Internal Organs A gross examination of the internal organs is performed using techniques similar to those described in related CPT codes. This step involves a thorough visual inspection of all major organs to identify any abnormalities.
  • Step 10: Microscopic Examination Following the gross examination, a microscopic examination is conducted. Fluid and tissue specimens removed during the autopsy are placed onto slides for microscopic review. These specimens may also be cultured for pathogens and tested for genetic diseases, metabolic disorders, or the presence of drugs or chemicals.
  • Step 11: Closure of the Body Upon completion of the autopsy, the body cavity is lined with an appropriate material, the internal organs are sealed into a plastic bag and returned to the body, and the abdomen and chest flaps are re-approximated and closed to ensure the integrity of the body.

3. Post-Procedure

After the necropsy is completed, the body is prepared for any necessary arrangements as per the family's wishes. The findings from the necropsy are documented in a detailed report, which may be used for further investigation or to provide closure to the family regarding the cause of death. It is essential that all specimens collected during the procedure are handled according to established protocols to ensure accurate results and maintain the integrity of the investigation.

Short Descr AUTOPSY (NECROPSY) COMPLETE
Medium Descr NECROPSY GROSS & MICROSCOPIC INFANT W/BRAIN
Long Descr Necropsy (autopsy), gross and microscopic; infant with brain
Status Code Non-Covered Service
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 9 - Not Applicable
Multiple Procedures (51) 9 - Concept does not apply.
Bilateral Surgery (50) 9 - Concept does not apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 9 - Concept does not apply.
Co-Surgeons (62) 9 - Concept does not apply.
Team Surgery (66) 9 - Concept does not apply.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Non-Covered Service, not paid under OPPS
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) P5E - Ambulatory procedures - other
MUE 0
CCS Clinical Classification 234 - Pathology
Date
Action
Notes
2011-01-01 Changed Short description changed.
Pre-1990 Added Code added.
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