ICD-10-PCS Coding for Vertebral Corpectomies

ICD-10-PCS coding for vertebral corpectomies depends on the intent of the procedure and the structures treated. When a corpectomy is performed to decompress the spinal cord or nerve roots, the root operation is typically Release. When the objective is removal of diseased vertebral bone, Excision may be appropriate. Coders must also understand how to report the related spinal fusion, including how to calculate the number of vertebral joints fused after one or more corpectomies.

The spinal column is susceptible to many diseases or disorders that alone or in combination cause compression of the spinal cord and nerve roots. Examples include disc herniation, osteoarthritis, spinal stenosis, and spondylosis. When pressure on the spinal cord becomes severe a corpectomy may be indicated.

What is a Corpectomy?

In medical terminology the root term “corp” means body and the suffix -ectomy means surgical removal or excision. Therefore, corpectomy is the surgical removal or excision of a body, specifically the vertebral body.

Corpectomy involves removal of an entire vertebral body or bodies and the associated intervertebral discs above and below to decompress the spinal cord and nerve roots. Corpectomy is typically performed for severe compression when a discectomy alone will not sufficiently decompress the neural elements.

Vertebral Body

A vertebral body is the large cylindrical portion of a vertebra, located on the anterior side of the spine. Adjacent vertebral bodies are separated by intervertebral discs.

In the image below, the structure within the red circle is the vertebral body. The image within the black circle illustrates a corpectomy with removal of the vertebral body and associated intervertebral discs. The area within the blue circle includes the posterior vertebral elements that remain after their associated vertebral body has been removed.

Image courtesy of Wikipedia Commons

ICD-10-PCS Coding

When coding corpectomy procedures, the root operation reported depends on the objective being met by removal of the vertebral body. Typically, the root operation is Release because the reason for removing the vertebral body is to relieve pressure on the spinal cord. However, there are occasions where corpectomy is performed to meet other objectives, such as removal of a vertebral body that is involved with malignancy or other disease. In these cases, the root operation that meets the objective of the procedure is Excision. Excision is the appropriate root operation because a corpectomy removes only the vertebral body and leaves the posterior portion of the vertebra.

The selection of body system and body part values is driven by which root operation is selected.

Root Operation – Release

When corpectomy is performed to decompress the spinal cord, an ICD-10-PCS code is assigned from the Central Nervous System and Cranial Nerves body system. The body part value(s) depends on which region(s) of the spinal cord is treated. If nerve roots are also decompressed an additional code(s) is assigned from the Peripheral Nervous System with body part value(s) dependent on what nerve root(s) is treated. (See Coding Clinic for ICD-10-CM/PCS, First Quarter 2019: Page 28).

Ultimately selection of body part values is dependent on the provider's documentation of what body part is being decompressed.

Root operation - Excision

Corpectomy procedures remove vertebral bone. So, when corpectomy meets the objective of the root operation Excision, it is reported with an ICD-10-PCS code from the Upper/Lower Bones body systems depending on which spinal region the vertebral body is removed from.

Fusion After Corpectomy

Once the vertebral body(ies) is removed an anterior spinal fusion is required to maintain stability of the spinal column.

It’s important to note that fusion is performed on articular body parts (joints) to render the joint immobile. Therefore, when using ICD-10-PCS to report spinal fusion after corpectomy the coder must move to the Upper/Lower Joints body systems to find code tables 0RG and 0SG with the root operation Fusion. In these tables the body part value reflects not only the spinal region involved but the number of vertebral joints fused. To calculate the number of vertebral joints fused the coder must understand that a vertebral level (e.g., C4-C5) is equivalent to one vertebral joint.

Fusion is accomplished by inserting structural bone graft or cages and bone graft to fill the space created by removing the vertebral body(ies) and discs. Essentially the cage or graft is taking the place of the structures removed. For fusion after corpectomy, if one corpectomy is performed, fusion is required at two vertebral levels, the level above and the level below the vertebral body that was removed. Removal of discs is integral to corpectomy and not separately coded.

Example:

For an L4 corpectomy with insertion of a structural bone graft in the resulting open space, a fusion would be performed between the L3 vertebra and the graft, which is fusion of the L3-L4 vertebral level and between the graft and the L5 vertebra, which is fusion of the L4-L5 vertebral level. This is coded as fusion of two vertebral joints.

Picture source: https://southeasternspine.com/wp-content/uploads/2021/02/lumbar-corpectomy.jpg

If two corpectomies are performed, the fusion procedure is reported as fusion of three vertebral joints as follows:

Joint 1 - The joint between the graft material and the vertebral body located above the top vertebral body removed.

Joint 2 - The joint between the graft material and the vertebral body located below the bottom vertebral body removed.

Joint 3 - The joint between the vertebral bodies that were removed.

Example:

Corpectomy of C4 and C5 with insertion of cage and bone graft between C3 and C6. In this case, the fusion spans three vertebral levels; C3-C4, C4-C5 and C5-C6, which is the equivalent of three vertebral joints. This is reflected in the body part value of the ICD-10-PCS code as “2 Cervical Vertebral Joints, 2 or more”.

For each additional corpectomy performed, another incidence of joint fusion is added to account for fusion of the vertebral joint between corpectomies.

For additional education in ICD-10-PCS coding for spinal fusion please visit HIAlearn.com to review the course Spinal Fusion Coding in ICD-10-PCS.

Take Aways

• Corpectomy removes the entire vertebral body but leaves the posterior vertebral elements.
• Corpectomy performed for decompression of neural elements is reported with the root operation Release
• Corpectomy for removal of vertebral body involved with malignancy or other disease is reported with the root operation Excision.
• When both the spinal cord and nerve roots are decompressed by corpectomy assign codes for release of both neural elements.
• Report fusion for Upper/Lower Bones according to spinal region and number of vertebral joints fused.
• When calculating the number of vertebral joints fused, count the level above and below the corpectomy and levels between corpectomies when multiple corpectomies are performed.

References

• ICD-10-PCS
• AHA Coding Clinic for ICD-10-CM/PCS" © 2026 American Hospital Association ("AHA")

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