Alphabetic Index FY2027

D17.9

Benign lipomatous neoplasm, unspecified

FY2027Chapter 2: Neoplasms/D10–D36 Benign neoplasms, except benign neuroendocrine tumors

BillableComplete code, valid to report
    Care settingsIPF Comorbidity · Oncology Treatment

    D17.9 (also written D179) is a billable ICD-10-CM diagnosis code for benign lipomatous neoplasm, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 16 codes in category D17 (Benign lipomatous neoplasm). The Alphabetic Index lists it under 10 entries.

    Care settings

    How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

    IPF Comorbidity

    On the CMS IPF comorbidity list.

    Comorbidity categoryFactor
    Oncology Treatment1.44
    It counts as a comorbidity when reported as a secondary diagnosis and actively treated during the stay. An IPF receives only one adjustment within a category and can receive adjustments in more than one category.

    Source: CMS IPF PPS FY 2027 final rule (CMS-1847-F), Addendum B-3 (comorbidity codes with adjustment factor); effective for discharges on or after October 1, 2026

    Inclusion terms

    Conditions classified to this code.

    This code
    • Lipoma NOS

    Notes

    Also from chapter/block level (8 notes)
    Inherited from Chapter 2 Neoplasms
    • Functional activity
    • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
    • Morphology [Histology]
    • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
    • Primary malignant neoplasms overlapping site boundaries
    • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
    • Malignant neoplasm of ectopic tissue
    • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

    Alphabetic Index terms

    Terms the official Alphabetic Index lists for this code. 10 entries