Chapter XVIII

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
(R00-R99)

Symptoms and signs involving the nervous and musculoskeletal systems
(R25-R29)


R25		Abnormal involuntary movements
		Excludes:	specific movement disorders ( G20-G26 ) stereotyped movement disorders ( F98.4 ) tic disorders ( F95.- )
R25.0		Abnormal head movements
R25.1		Tremor, unspecified
		Excludes:	chorea NOS ( G25.5 ) tremor: · essential ( G25.0 ) · hysterical ( F44.4 ) · intention ( G25.2 )
R25.2		Cramp and spasm
		Excludes:	carpopedal spasm ( R29.0 ) infantile spasms ( G40.4 )
R25.3		Fasciculation
		Twitching NOS
R25.8		Other and unspecified abnormal involuntary movements


R26		Abnormalities of gait and mobility
		Excludes:	ataxia: · NOS ( R27.0 ) · hereditary ( G11.- ) · locomotor (syphilitic) ( A52.1 ) immobility syndrome (paraplegic) ( M62.3 )
R26.0		Ataxic gait
		Staggering gait
R26.1		Paralytic gait
		Spastic gait
R26.2		Difficulty in walking, not elsewhere classified
R26.8		Other and unspecified abnormalities of gait and mobility
		Unsteadiness on feet NOS


R27		Other lack of coordination
		Excludes:	ataxic gait ( R26.0 ) hereditary ataxia ( G11.- ) vertigo NOS ( R42 )
R27.0		Ataxia, unspecified
R27.8		Other and unspecified lack of coordination


R29		Other symptoms and signs involving the nervous and musculoskeletal systems
R29.0		Tetany
		Carpopedal spasm
		Excludes:	tetany: · hysterical ( F44.5 ) · neonatal ( P71.3 ) · parathyroid ( E20.9 ) · post-thyroidectomy ( E89.2 )
R29.1		Meningismus
R29.2		Abnormal reflex
		Excludes:	abnormal pupillary reflex ( H57.0 ) hyperactive gag reflex ( J39.2 ) vasovagal reaction or syncope ( R55 )
R29.3		Abnormal posture
R29.4		Clicking hip
		Excludes:	congenital deformities of hip ( Q65.- )
R29.6		Tendency to fall, not elsewhere classified
		Includes:	Tendency to fall because of old age or other unclear health problems
		Excludes:	accidents ( X59.- ) difficulty in walking ( R26.2 ) dizziness and giddiness ( R42 ) falls causing injury ( W00-W19 ) falls due to diseases classified elsewhere syncope and collapse ( R55 )
R29.8		Other and unspecified symptoms and signs involving the nervous and musculoskeletal systems