| Changes in 2011 DeCS hierarchical codes - December 22, 2010 | Portuguese | |||
| Spanish | ||||
| Descriptor | Deleted hierarchical codes | Added hierarchical codes | ||
| Airports | J01.086.339.034 | |||
| N06.850.860.410.054 | ||||
| Antidotes | HP4.029.361.086 | |||
| Autobiography | K01.517.211.215 | V02.170.750 | ||
| Biota | G16.500.275.157.049.100 | |||
| N06.230.124.049.100 | ||||
| Carbon Cycle | G02.607.750.120 | |||
| G02.842.750.270 | ||||
| G16.500.240.118 | ||||
| Complementary Therapies | HP3.018 | |||
| Coral Reefs | G16.500.275.157.130 | |||
| N06.230.124.130 | ||||
| Datura metel | B01.650.940.800.575.100.905.188.550 | |||
| Denitrification | G02.842.750.643.500 | |||
| G16.100.277 | ||||
| G16.500.240.250 | ||||
| G16.500.240.465.249 | ||||
| Diatoms | B01.040.185 | B01.750.875 | ||
| SP4.016.157.693.229 | SP4.016.157.713.229 | |||
| Drug Incompatibility | HP4.029.361.124 | |||
| Environmental Policy | I01.655.500.608.180 | |||
| I01.880.604.825.608.180 | ||||
| N03.623.500.608.180 | ||||
| N06.230.204 | ||||
| Gross Domestic Product | I01.261.587 | |||
| Health Communication | L01.143.350 | |||
| N02.208 | ||||
| Hydrodynamics | G01.342 | |||
| Iron Compounds | D01.485 | D01.490 | ||
| D01.632.550 | ||||
| D02.691.550 | ||||
| Nitrification | G16.500.240.465.500 | |||
| Nitrogen Cycle | G02.111.087.599 | |||
| G02.149.115.599 | ||||
| G02.607.750.560 | ||||
| G02.842.750.643 | ||||
| G16.500.240.465 | ||||
| Organic Agriculture | J01.040.895 | |||
| Weed Control | J01.040.947 | |||