CS Extension

Notes

**Note 1**: In codes 390, 400, and 440, "multiple (satellite) nodules/tumors" includes satellitosis, multifocal tumors, and intrahepatic metastases. **Note 2**: Major vascular invasion (code 630) is defined as invasion of the branches of the main portal vein (right or left portal vein, not including sectoral or segmental branches) or as invasion of one or more of the three hepatic veins (right, middle, or left). Invasion of hepatic artery or vena cava is coded to 660.
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
100 Single lesion (one lobe)
WITHOUT intrahepatic vascular invasion, including vascular invasion not stated
T1 T1 L L
150 More than one lobe involved by contiguous growth (single lesion)
WITHOUT intrahepatic vascular invasion, including vascular invasion not stated
T1 T1 RE RE
170 Confined to liver, NOS
Localized, NOS
T1 T1 L L
200 OBSOLETE DATA CONVERTED V0200
See code 350

Single lesion (one lobe) WITH intrahepatic vascular invasion
ERROR: ERROR: ERROR: ERROR:
250 Single lesion
WITH involvement of one or more lobes of liver or extension within liver not stated,
WITH extension to gallbladder
WITHOUT vascular invasion, including vascular invasion not stated
T1 T1 RE RE
270 Stated as T1 with no other information on extension T1 T1 L L
300 OBSOLETE DATA CONVERTED V0200
See code 390

Multiple (satellite) nodules/tumors (one lobe)
WITHOUT
intrahepatic vascular invasion, including vascular invasion not stated
ERROR: ERROR: ERROR: ERROR:
350 Single lesion (one lobe )
WITH intrahepatic vascular invasion
T2 T2 L L
370 More than one lobe involved by contiguous growth (single lesion)
WITH vascular invasion
T2 T2 RE RE
380 Single lesion
WITH involvement of one or more lobes of liver or extension within liver not stated
WITH extension to gallbladder
WITH intrahepatic vascular invasion
T2 T2 RE RE
390 Multiple (satellite) nodules/tumors (one lobe)
WITHOUT intrahepatic vascular invasion, including vascular invasion not stated
Extension Size AJCC7 Extension Size AJCC6 L L
400 Multiple (satellite) nodules/tumors (one lobe)
WITH intrahepatic vascular invasion
Extension Size AJCC7 Extension Size AJCC6 L L
420 Multiple (satellite) nodules/tumors (one lobe)
WITH extension to gallbladder
WITH or WITHOUT intrahepatic vascular invasion
Extension Size AJCC7 Extension Size AJCC6 RE RE
440 Multiple (satellite) nodules/tumors in more than one lobe of liver or on surface of parenchyma
Satellite nodules, NOS
Extension Size AJCC7 Extension Size AJCC6 D RE
460 Stated as T2 with no other information on extension T2 T2 L L
500 OBSOLETE DATA CONVERTED V0200
See code 170

Confined to liver, NOS
Localized, NOS
ERROR: ERROR: ERROR: ERROR:
510 OBSOLETE DATA CONVERTED V0200
See code 150

More than one lobe involved by contiguous growth (single lesion)
WITHOUT vascular invasion, including vascular invasion not stated
ERROR: ERROR: ERROR: ERROR:
520 OBSOLETE DATA CONVERTED V0200
See code 370

More than one lobe involved by contiguous growth (single lesion)
WITH vascular invasion
ERROR: ERROR: ERROR: ERROR:
530 OBSOLETE DATA CONVERTED V0200
See code 250

Extension to gallbladder, extent within liver not stated
ERROR: ERROR: ERROR: ERROR:
540 OBSOLETE DATA CONVERTED V0200
See code 250

Extension to gallbladder 530 + (100 or 510)
ERROR: ERROR: ERROR: ERROR:
550 OBSOLETE DATA CONVERTED V0200
See code 380

Extension to gallbladder 530 + (200 or 520)
ERROR: ERROR: ERROR: ERROR:
560 OBSOLETE DATA CONVERTED V0200
See code 420

Extension to gallbladder 530 + (300 or 400)
ERROR: ERROR: ERROR: ERROR:
580 OBSOLETE DATA CONVERTED V0200
See code 645

Extrahepatic bile ducts
ERROR: ERROR: ERROR: ERROR:
600 Stated as T3a with no other information regarding extension T3a T3 RE RE
630 Single tumor (confined to one lobe) or multiple tumor(s) (confined to one lobe and not on surface of liver)
WITH major vascular invasion: major branch(es) of portal or hepatic vein(s)
(See Note 2)
T3b T3 RE RE
635 630 + 440

Single or multiple tumor(s) with major vascular invasion: major branch(es) of portal or hepatic vein(s) plus multiple nodules/tumors in more than one lobe of liver or on surface of parenchyma
T3b T3 D RE
638 Stated as T3b with no other information on extension T3b T3 RE RE
639 Stated as T3 [NOS] with no other information on extension T3NOS T3 RE RE
640 Direct extension/perforation of visceral peritoneum T4 T4 RE RE
645 Extrahepatic bile ducts T4 T4 RE RE
650 OBSOLETE DATA CONVERTED V0200
See code 440

Multiple (satellite) nodules/tumors in more than one lobe of liver or on surface of parenchyma
Satellite nodules, NOS
ERROR: ERROR: ERROR: ERROR:
660 Extension to hepatic artery or vena cava T4 T4 RE RE
670 OBSOLETE DATA CONVERTED V0200
See code 635

630+650
ERROR: ERROR: ERROR: ERROR:
700 Diaphragm T4 T4 RE RE
750 OBSOLETE DATA RETAINED AND REVIEWED V0203
Perforation of visceral peritoneum included in 2 codes in CSv2: V0201, V0202. Any case coded 750 for perforation of visceral peritoneum should be recoded to 640. See codes 640, 755

Lesser omentum
Ligament(s):
Coronary
Falciform
Hepatoduodenal
Hepatogastric
Round (of liver)
Triangular
Perforation of visceral peritoneum
Parietal peritoneum
T4 T4 RE RE
755 Lesser omentum
Ligament(s):
Coronary
Falciform
Hepatoduodenal
Hepatogastric
Round (of liver)
Triangular
Parietal peritoneum
T4 T4 RE RE
760 OBSOLETE DATA CONVERTED V0200
See code 770

(650 or 670) + any of (640 or 660 or 700 or 750)
ERROR: ERROR: ERROR: ERROR:
770 (640, 645, 660, 700, or 755) + (440 or 635)

Any extension coded in (640, 645, 660, 700, or 755) plus multiple tumors/nodules in more than one lobe of liver or on surface of parenchyma
T4 T4 D RE
800 Further contiguous extension:
Pancreas
Pleura
Stomach
Other contiguous extension
T4 T4 D D
805 OBSOLETE DATA CONVERTED V0203
See code 950

No evidence of primary tumor
ERROR: ERROR: ERROR: ERROR:
810 Stated as T4 with no other information on extension T4 T4 D D
950 No evidence of primary tumor T0 T0 U U
999 Unknown, extension not stated
Primary tumor cannot be assessed
Not documented in patient record
TX TX U U
- For CS Extension codes 390, 400, 420, and 440 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size AJCC 7 Table for this schema. - For CS Extension codes 390, 400, 420, and 440 ONLY, the T category for AJCC 6 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size AJCC 6 Table for this schema.