Context: Establishment of classification of CTS on various basis have been reported. However surgery or conservative__ampersandsignlsquo; intervention may still remain a dilemma. In last 2 years we had electro diagnosis data__ampersandsignnbsp;collected of patients clinically diagnosed and electro physiologically confirmed CTS.Aim: to study if the emerging pattern of NCS can be categorized. Design: Hospital based, Retrospective Analysis Methods and Material: Data CTS patients referred for NCS analyzed afterelectro physiologically confirmation. The data were grouped on the basis of SML. Statistical analysis used: Descriptive statistics, Regression analysis Results: Total No. of cases 70, females 64, males 06, age range 23 __ampersandsignndash; 72 yrs. Clinically involved hands Rt.19, Lt.23 and 28 bilateral. No. of hands electro physiologically normal (sensory latency __ampersandsignlt;3.05ms) were 31, 50% were symptomatic, analyses indicated changes in ILDMU, SNCV, FML, although Sensory Latency and SNAP amplitude with Motor parameters remained in normal limits.Progressively__ampersandsignnbsp; Group I to V showed SNCV significantly decreases (49 to 12 m/s) and ILDMU(sensory) significantly increases (0.8 to 9 ms) SNAP shows progressive reduction (51 to 14__ampersandsignmu;V), motor distal latencies and FMLM was progressively prolonged across groups. Regression analysis for the ILDMU difference and the SNCV show high predictability. Retrograde degeneration was obvious from group I. Conclusions: The emerging pattern established categories similar to that reported in literature. In view of CTS natural history, conservative treatment is suggested in mild to moderate cases.