C78.01 is the authoritative medical code for Secondary malignant neoplasm of right lung. This classification is used in medical billing and clinical recording to specify the clinical criteria for secondary malignant neoplasm of right lung (ICD-10-CM C78.01), 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
Secondary malignant neoplasm of right lung is a billable ICD-10-CM diagnosis code C78.01. Excludes1 (not coded here): secondary carcinoid tumors of liver C7B.02; secondary carcinoid tumors of peritoneum C7B.04. Excludes2 (not included here): lymph node metastases C77.0.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C78.01 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.
- secondary carcinoid tumors of liver C7B.02
- secondary carcinoid tumors of peritoneum C7B.04
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- lymph node metastases C77.0
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with C78.01?
Per official ICD-10-CM Excludes1 instructions, C78.01 must not be reported together with: secondary carcinoid tumors of liver (C7B.02); secondary carcinoid tumors of peritoneum (C7B.04).
Can C78.01 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, C78.01 and the following are not considered part of each other and may both be reported when both conditions are present: lymph node metastases (C77.0).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to C78.01 in its code family, with their registry titles.
- C78 — Secondary malignant neoplasm of respiratory and digestive organs
- C78.0 — Secondary malignant neoplasm of lung
- C78.00 — Secondary malignant neoplasm of unspecified lung
- C78.02 — Secondary malignant neoplasm of left lung
- C78.1 — Secondary malignant neoplasm of mediastinum
- C78.2 — Secondary malignant neoplasm of pleura
- C78.3 — Secondary malignant neoplasm of other and unspecified respiratory organs
- C78.30 — Secondary malignant neoplasm of unspecified respiratory organ
- C78.31 — Secondary malignant neoplasm of larynx
- C78.32 — Secondary malignant neoplasm of pharynx
View all 18 codes in the C78 family
Neoplasm Table Sites (23)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, bronchiogenic, bronchogenic (lung) — Malignant, Secondary
- Neoplasm, neoplastic, bronchiole — Malignant, Secondary
- Neoplasm, neoplastic, bronchus — Malignant, Secondary
- Neoplasm, neoplastic, bronchus, carina — Malignant, Secondary
- Neoplasm, neoplastic, bronchus, lower lobe of lung — Malignant, Secondary
- Neoplasm, neoplastic, bronchus, main — Malignant, Secondary
- Neoplasm, neoplastic, bronchus, middle lobe of lung — Malignant, Secondary
- Neoplasm, neoplastic, bronchus, upper lobe of lung — Malignant, Secondary
- Neoplasm, neoplastic, carina (bronchus) — Malignant, Secondary
- Neoplasm, neoplastic, hilus of lung — Malignant, Secondary
- Neoplasm, neoplastic, lingula, lung — Malignant, Secondary
- Neoplasm, neoplastic, lung — Malignant, Secondary
- Neoplasm, neoplastic, lung, azygos lobe — Malignant, Secondary
- Neoplasm, neoplastic, lung, carina — Malignant, Secondary
- Neoplasm, neoplastic, lung, hilus — Malignant, Secondary
- Neoplasm, neoplastic, lung, lingula — Malignant, Secondary
- Neoplasm, neoplastic, lung, lobe NEC — Malignant, Secondary
- Neoplasm, neoplastic, lung, lower lobe — Malignant, Secondary
- Neoplasm, neoplastic, lung, main bronchus — Malignant, Secondary
- Neoplasm, neoplastic, lung, middle lobe — Malignant, Secondary
- Neoplasm, neoplastic, lung, upper lobe — Malignant, Secondary
- Neoplasm, neoplastic, pulmonary — Malignant, Secondary
- Neoplasm, neoplastic, subpleural — Malignant, Secondary