2025 ICD-10-CM Diagnosis Code C41.2

Approximate Synonyms

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

Clinical Classification

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

Clinical Information

• Nucleus Pulposus

  fibrocartilage inner core of the intervertebral disc. prolapsed or bulged nucleus pulposus leads to intervertebral disc displacement while proliferation of cells in the nucleus pulposus is associated with intervertebral disc degeneration.

• Chordoma

  a malignant tumor arising from the embryonic remains of the notochord. it is also called chordocarcinoma, chordoepithelioma, and notochordoma. (dorland, 27th ed)

• Poorly Differentiated Chordoma

  a rare, aggressive type of chordoma characterized by loss of smarcb1 expression. it affects children and occasionally young adults. females are affected twice as frequently as males. it usually arises in the axial skeleton. it is composed of sheets or nests of malignant epithelioid cells with abundant eosinophilic cytoplasm. the prognosis is poor.

MS-DRG Mapping for ICD-10-CM Code C41.2

Diagnosis-Related Groups (DRGs) are used to classify hospital cases for billing and healthcare management. They help standardize how hospitals and other providers are reimbursed for inpatient care. Patients are grouped based on their principal diagnosis into broader categories called Major Diagnostic Categories (MDCs).

Once assigned to a DRG, the hospital receives a set payment for the patient’s care, regardless of the actual services provided. This fixed rate is intended to cover the typical cost of treating patients within that group. The payment amount depends on the DRG's relative weight, which reflects the expected complexity and cost of care based on the severity of the patient’s condition.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V42.0 applicable from 10/01/2024 through 09/30/2025.

Convert C41.2 to ICD-9-CM

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

Table of Neoplasms

This code is referenced in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Filter table of neoplasms:

Neoplasm, neoplastic	Malignant Primary	Malignant Secondary	CaInSitu	Benign	Uncertain Behavior	Unspecified Behavior
»Neoplasm, neoplastic   »atlas	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »bone (periosteum)     »atlas	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »bone (periosteum)     »axis	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »bone (periosteum)     »back NEC	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »bone (periosteum)     »intervertebral cartilage or disc	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »bone (periosteum)     »spine, spinal (column)	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »bone (periosteum)     »vertebra (column)	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »cartilage (articular) (joint) NEC [See Also: Neoplasm, bone]     »intervertebral	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »disc, intervertebral	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »intervertebral cartilage or disc	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »nucleus pulposus	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »spine, spinal (column)	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »spine, spinal (column)     »lumbosacral	C41.2	C79.51		D16.6	D48.0	D49.2
»Neoplasm, neoplastic   »vertebra (column)	C41.2	C79.51		D16.6	D48.0	D49.2

Patient Education

Bone Cancer

Cancer that starts in a bone is uncommon. Cancer that has spread to the bone from another part of the body is more common.

There are three types of bone cancer:

• Osteosarcoma - occurs most often between ages 10 and 19. It is more common in the knee and upper arm.
• Chondrosarcoma - starts in cartilage, usually after age 40
• Ewing's sarcoma - occurs most often in children and teens under 19. It is more common in boys than girls.

The most common symptom of bone cancer is pain. Other symptoms vary, depending on the location and size of the cancer. Surgery is often the main treatment for bone cancer. Other treatments may include amputation, chemotherapy, and radiation therapy. Because bone cancer can come back after treatment, regular follow-up visits are important.

NIH: National Cancer Institute

[Learn More in MedlinePlus]

Chordoma

A chordoma is a rare type of cancerous tumor that can occur anywhere along the spine, from the base of the skull to the tailbone. Chordomas grow slowly, gradually extending into the bone and soft tissue around them. They often recur after treatment, and in about 40 percent of cases the cancer spreads (metastasizes) to other areas of the body, such as the lungs.

Approximately half of all chordomas occur at the base of the spine (sacrum), about one third occur in the base of the skull (occiput), and the rest occur in the cervical (neck), thoracic (upper back), or lumbar (lower back) vertebrae of the spine. As the chordoma grows, it puts pressure on the adjacent areas of the brain or spinal cord, leading to the signs and symptoms of the disorder. A chordoma anywhere along the spine may cause pain, weakness, or numbness in the back, arms, or legs. A chordoma at the base of the skull (occipital chordoma) may lead to double vision (diplopia) and headaches. A chordoma that occurs in the tailbone (coccygeal chordoma) may result in a lump large enough to be felt through the skin and may cause problems with bladder or bowel function.

Chordomas typically occur in adults between ages 40 and 70. About 5 percent of chordomas are diagnosed in children. For reasons that are unclear, males are affected about twice as often as females.

[Learn More in MedlinePlus]

Primary Bone Cancer

Learn about the types of bone tumors and the methods used to diagnose and treat cancers that form from bone tissue.
[Learn More in MedlinePlus]

Code History

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.