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D48.0 ICD-10-CM Code: Neoplasm of uncertain behavior of bone and articular cartilage

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FY 2026 Apr update / Neoplasms (C00-D49) / Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48)

D48.0

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Neoplasm of uncertain behavior of bone and articular cartilage

A tumor of bone or cartilage that has uncertain behavior, meaning it is not clearly benign or malignant and requires careful monitoring.

CMS-HCC V28

0

0

RAF 0

CMS-HCC V24

0

0

RAF 0

ACA/HHS

0

0

RAF 0

ESRD/PACE

0

0

RAF 0

RXHCC

0

0

RAF 0

Code Trumping

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Code Book Path

Official
D48Neoplasm of uncertain behavior of other and unspecified sites
D48.0Neoplasm of uncertain behavior of bone and articular cartilage

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for D48.0 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for D48.0 in this effective period.

Related Child Codes

Official
D48.1Neoplasm of uncertain behavior of connective and other soft tissue
D48.2Neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system
D48.3Neoplasm of uncertain behavior of retroperitoneum
D48.4Neoplasm of uncertain behavior of peritoneum
D48.5Neoplasm of uncertain behavior of skin

Includes

Official

ICD-10-CM does not list Includes notes for D48.0 in this effective period.

Excludes 1

Official
  • neoplasm of uncertain behavior of cartilage of ear (D48.1-)
  • neoplasm of uncertain behavior of cartilage of larynx (D38.0)
  • neoplasm of uncertain behavior of cartilage of nose (D38.5)
  • neoplasm of uncertain behavior of connective tissue of eyelid (D48.1-)
  • neoplasm of uncertain behavior of synovia (D48.1-)

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for D48.0 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for D48.0 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for D48.0 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Use this code when pathology reports indicate uncertain behavior rather than clearly benign or malignant tumors
Document the specific bone or cartilage location for clarity in the medical record

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is D48.0 an HCC code?

No. D48.0 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

Coder workflow notes

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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

D48.0 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of bone and articular cartilage. A tumor of bone or cartilage that has uncertain behavior, meaning it is not clearly benign or malignant and requires careful monitoring. D48.0 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (d37-d48).

D48.0 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Use this code when pathology reports indicate uncertain behavior rather than clearly benign or malignant tumors.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D48.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • Use this code when pathology reports indicate uncertain behavior rather than clearly benign or malignant tumors
  • Document the specific bone or cartilage location for clarity in the medical record

Excludes 1, Do NOT code together

  • neoplasm of uncertain behavior of cartilage of ear (D48.1-)
  • neoplasm of uncertain behavior of cartilage of larynx (D38.0)
  • neoplasm of uncertain behavior of cartilage of nose (D38.5)
  • neoplasm of uncertain behavior of connective tissue of eyelid (D48.1-)
  • neoplasm of uncertain behavior of synovia (D48.1-)

Child Codes

Code Hierarchy

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