D48.9 is the authoritative medical code for Neoplasm of uncertain behavior, unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for neoplasm of uncertain behavior, unspecified (ICD-10-CM D48.9), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Neoplasm of uncertain behavior, unspecified is a billable ICD-10-CM diagnosis code D48.9. Excludes1 (not coded here): neurofibromatosis nonmalignant Q85.0-; neoplasms of unspecified behavior D49.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for D48.9 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- neurofibromatosis nonmalignant Q85.0-
- neoplasms of unspecified behavior D49.-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with D48.9?
Per Excludes1 instructions, D48.9 must not be reported with: neurofibromatosis (nonmalignant) (Q85.0-); neoplasms of unspecified behavior (D49.-).
Codes in This Family (24)
Official ICD-10-CM classifications in the same code family as D48.9, with their registry titles.
- D48 — Neoplasm of uncertain behavior of other and unspecified sites
- D48.0 — Neoplasm of uncertain behavior of bone and articular cartilage
- D48.1 — Neoplasm of uncertain behavior of connective and other soft tissue
- D48.11 — Desmoid tumor
- D48.110 — Desmoid tumor of head and neck
- D48.111 — Desmoid tumor of chest wall
- D48.112 — Desmoid tumor, intrathoracic
- D48.113 — Desmoid tumor of abdominal wall
- D48.114 — Desmoid tumor, intraabdominal
- D48.115 — Desmoid tumor of upper extremity and shoulder girdle
- D48.116 — Desmoid tumor of lower extremity and pelvic girdle
- D48.117 — Desmoid tumor of back
- D48.118 — Desmoid tumor of other site
- D48.119 — Desmoid tumor of unspecified site
- D48.19 — Other specified neoplasm of uncertain behavior of connective and other soft tissue
- D48.2 — Neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system
- D48.3 — Neoplasm of uncertain behavior of retroperitoneum
- D48.4 — Neoplasm of uncertain behavior of peritoneum
- D48.5 — Neoplasm of uncertain behavior of skin
- D48.6 — Neoplasm of uncertain behavior of breast
- D48.60 — Neoplasm of uncertain behavior of unspecified breast
- D48.61 — Neoplasm of uncertain behavior of right breast
- D48.62 — Neoplasm of uncertain behavior of left breast
- D48.7 — Neoplasm of uncertain behavior of other specified sites
Neoplasm Table Sites (2)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic — Uncertain Behavior
- Neoplasm, neoplastic, unknown site or unspecified — Uncertain Behavior
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code D43.9
Neoplasm of uncertain behavior of central nervous system, unspecified
ICD Code D44.9
Neoplasm of uncertain behavior of unspecified endocrine gland
ICD Code D47.9
Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecified