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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Symptoms, Signs, And Ill-Defined Conditions 780-799 > Symptoms 780-789 > ICD-9-CM Diagnosis 781 Symptoms involving nervous and musculoskeletal systems 781 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 781.0 Abnormal involuntary movements An involuntary contraction of a muscle or group of muscles. Spasms may involve skeletal muscle (MUSCLE, SKELETAL) or smooth muscle (MUSCLE, SMOOTH). Cyclical movement of a body part that can represent either a physiologic process or a manifestation of disease. Intention or action tremor, a common manifestation of CEREBELLAR DISEASES, is aggravated by movement. In contrast, resting tremor is maximal when there is no attempt at voluntary movement, and occurs as a relatively frequent manifestation of PARKINSON DISEASE. Involuntary contraction of the muscle fibers innervated by a motor unit. Fasciculations can often by visualized and take the form of a muscle twitch or dimpling under the skin, but usually do not generate sufficient force to move a limb. They may represent a benign condition or occur as a manifestation of MOTOR NEURON DISEASE or PERIPHERAL NERVOUS SYSTEM DISEASES. (Adams et al., Principles of Neurology, 6th ed, p1294) Tremor is the shaking movement of the whole body or just a certain part of it, often caused by problems of the neurons responsible for muscle action. (from Wikipedia) 781.0 is a specific code that can be used to specify a diagnosis 781.0 contains 34 index entries ICD-9-CM Diagnosis 781.1 Disturbances of sensation of smell and taste A bad taste in the mouth. A condition characterized by alterations of the sense of taste which may range from mild to severe, including gross distortions of taste quality. Abnormal appreciation of the taste of foodstuffs, can be related to decreased sense of smell. Absence of the sense of smell. (Dorland, 27th ed) Diminished ability to smell. Diminished ability to taste. 781.1 is a specific code that can be used to specify a diagnosis 781.1 contains 19 index entries ICD-9-CM Diagnosis 781.2 Abnormality of gait (ah-TAK-sik) Awkward, uncoordinated walking. 781.2 is a specific code that can be used to specify a diagnosis 781.2 contains 14 index entries ICD-9-CM Diagnosis 781.3 Lack of coordination Impairment of the ability to perform smoothly coordinated voluntary movements. This condition may affect the limbs, trunk, eyes, pharynx, larynx, and other structures. Ataxia may result from impaired sensory or motor function. Sensory ataxia may result from posterior column injury or PERIPHERAL NERVE DISEASES. Motor ataxia may be associated with CEREBELLAR DISEASES; CEREBRAL CORTEX diseases; THALAMIC DISEASES; BASAL GANGLIA DISEASES; injury to the RED NUCLEUS; and other conditions. Loss of muscle coordination. 781.3 is a specific code that can be used to specify a diagnosis 781.3 contains 25 index entries ICD-9-CM Diagnosis 781.4 Transient paralysis of limb 781.4 is a specific code that can be used to specify a diagnosis 781.4 contains 7 index entries ICD-9-CM Diagnosis 781.5 Clubbing of fingers 781.5 is a specific code that can be used to specify a diagnosis 781.5 contains 1 index entry ICD-9-CM Diagnosis 781.6 Meningismus A condition characterized by neck stiffness, headache, and other symptoms suggestive of meningeal irritation, but without actual inflammation of the meninges (MENINGITIS). Spinal fluid pressure may be elevated but spinal fluid is normal. (DeJong, The Neurologic Examination, 4th ed, p673) 781.6 is a specific code that can be used to specify a diagnosis 781.6 contains 6 index entries ICD-9-CM Diagnosis 781.7 Tetany A disorder characterized by muscle twitches, cramps, and carpopedal spasm, and when severe, laryngospasm and seizures. This condition is associated with unstable depolarization of axonal membranes, primarily in the peripheral nervous system. Tetany usually results from HYPOCALCEMIA or reduced serum levels of MAGNESIUM that may be associated with HYPERVENTILATION; HYPOPARATHYROIDISM; RICKETS; UREMIA; or other conditions. (From Adams et al., Principles of Neurology, 6th ed, p1490) 781.7 is a specific code that can be used to specify a diagnosis 781.7 contains 10 index entries ICD-9-CM Diagnosis 781.8 Neurological neglect syndrome 781.8 is a specific code that can be used to specify a diagnosis 781.8 contains 11 index entries ICD-9-CM Diagnosis 781.9 Other symptoms involving nervous and musculoskeletal systems 781.9 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 781.91 Loss of height 781.91 is a specific code that can be used to specify a diagnosis 781.91 contains 2 index entries ICD-9-CM Diagnosis 781.92 Abnormal posture 781.92 is a specific code that can be used to specify a diagnosis 781.92 contains 1 index entry ICD-9-CM Diagnosis 781.93 Ocular torticollis 781.93 is a specific code that can be used to specify a diagnosis 781.93 contains 2 index entries ICD-9-CM Diagnosis 781.94 Facial weakness 781.94 is a specific code that can be used to specify a diagnosis 781.94 contains 2 index entries ICD-9-CM Diagnosis 781.99 Other symptoms involving nervous and musculoskeletal systems 781.99 is a specific code that can be used to specify a diagnosis 781.99 contains 16 index entries