| S12091D | Oth nondisp fx of 1st cervcal vert, subs for fx w routn heal Other nondisplaced fracture of first cervical vertebra, subsequent encounter for fracture with routine healing |
| S12091G | Oth nondisp fx of 1st cervcal vert, subs for fx w delay heal Other nondisplaced fracture of first cervical vertebra, subsequent encounter for fracture with delayed healing |
| S12091K | Oth nondisp fx of first cervcal vert, subs for fx w nonunion Other nondisplaced fracture of first cervical vertebra, subsequent encounter for fracture with nonunion |
| S12091S | Other nondisplaced fracture of first cervical vertebra, sequela |
| S121 | Fracture of second cervical vertebra |
| S1210 | Unspecified fracture of second cervical vertebra |
| S12100 | Unspecified displaced fracture of second cervical vertebra |
| S12100A | Unspecified displaced fracture of second cervical vertebra, initial encounter for closed fracture |
| S12100B | Unspecified displaced fracture of second cervical vertebra, initial encounter for open fracture |
| S12100D | Unspecified displaced fracture of second cervical vertebra, subsequent encounter for fracture with routine healing |
| S12100G | Unspecified displaced fracture of second cervical vertebra, subsequent encounter for fracture with delayed healing |
| S12100K | Unspecified displaced fracture of second cervical vertebra, subsequent encounter for fracture with nonunion |
| S12100S | Unspecified displaced fracture of second cervical vertebra, sequela |
| S12101 | Unspecified nondisplaced fracture of second cervical vertebra |
| S12101A | Unspecified nondisplaced fracture of second cervical vertebra, initial encounter for closed fracture |
| S12101B | Unsp nondisp fx of second cervical vertebra, init for opn fx Unspecified nondisplaced fracture of second cervical vertebra, initial encounter for open fracture |
| S12101D | Unspecified nondisplaced fracture of second cervical vertebra, subsequent encounter for fracture with routine healing |
| S12101G | Unspecified nondisplaced fracture of second cervical vertebra, subsequent encounter for fracture with delayed healing |
| S12101K | Unspecified nondisplaced fracture of second cervical vertebra, subsequent encounter for fracture with nonunion |
| S12101S | Unspecified nondisplaced fracture of second cervical vertebra, sequela |
| S1211 | Type II dens fracture |
| S12110 | Anterior displaced Type II dens fracture |
| S12110A | Anterior displaced Type II dens fracture, initial encounter for closed fracture |
| S12110B | Anterior displaced Type II dens fracture, initial encounter for open fracture |
| S12110D | Anterior displaced Type II dens fracture, subsequent encounter for fracture with routine healing |
| S12110G | Anterior displaced Type II dens fracture, subsequent encounter for fracture with delayed healing |
| S12110K | Anterior displ Type II dens fracture, subs for fx w nonunion Anterior displaced Type II dens fracture, subsequent encounter for fracture with nonunion |
| S12110S | Anterior displaced Type II dens fracture, sequela |
| S12111 | Posterior displaced Type II dens fracture |
| S12111A | Posterior displaced Type II dens fracture, initial encounter for closed fracture |
| S12111B | Posterior displaced Type II dens fracture, initial encounter for open fracture |
| S12111D | Posterior displaced Type II dens fracture, subsequent encounter for fracture with routine healing |
| S12111G | Posterior displaced Type II dens fracture, subsequent encounter for fracture with delayed healing |
| S12111K | Posterior displaced Type II dens fracture, subsequent encounter for fracture with nonunion |
| S12111S | Posterior displaced Type II dens fracture, sequela |
| S12112 | Nondisplaced Type II dens fracture |
| S12112A | Nondisplaced Type II dens fracture, initial encounter for closed fracture |
| S12112B | Nondisplaced Type II dens fracture, initial encounter for open fracture |
| S12112D | Nondisplaced Type II dens fracture, subs for fx w routn heal Nondisplaced Type II dens fracture, subsequent encounter for fracture with routine healing |
| S12112G | Nondisplaced Type II dens fracture, subs for fx w delay heal Nondisplaced Type II dens fracture, subsequent encounter for fracture with delayed healing |
| S12112K | Nondisplaced Type II dens fracture, subsequent encounter for fracture with nonunion |
| S12112S | Nondisplaced Type II dens fracture, sequela |
| S1212 | Other dens fracture |
| S12120 | Other displaced dens fracture |
| S12120A | Oth displaced dens fracture, init encntr for closed fracture Other displaced dens fracture, initial encounter for closed fracture |
| S12120B | Other displaced dens fracture, init encntr for open fracture Other displaced dens fracture, initial encounter for open fracture |
| S12120D | Other displaced dens fracture, subsequent encounter for fracture with routine healing |
| S12120G | Other displaced dens fracture, subsequent encounter for fracture with delayed healing |
| S12120K | Other displaced dens fracture, subsequent encounter for fracture with nonunion |
| S12120S | Other displaced dens fracture, sequela |