ICD-9 Code 781.99

Other symptoms involving nervous and musculoskeletal systems

Not Valid for Submission

781.99 is a legacy non-billable code used to specify a medical diagnosis of other symptoms involving nervous and musculoskeletal systems. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 781.99
Short Description:Nerve/musculskel sym NEC
Long Description:Other symptoms involving nervous and musculoskeletal systems

Convert 781.99 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • R29.818 - Other symptoms and signs involving the nervous system
  • R29.898 - Oth symptoms and signs involving the musculoskeletal system
  • R29.90 - Unspecified symptoms and signs involving the nervous system
  • R29.91 - Unsp symptoms and signs involving the musculoskeletal system

Code Classification

  • Symptoms, signs, and ill-defined conditions (780–799)
    • Symptoms (780-789)
      • 781 Symptoms involving nervous and musculoskeletal systems

Information for Medical Professionals

Synonyms

  • Abdominal reflex unequal
  • Abnormal extension
  • Abnormal flexion
  • Abnormal movement in bone
  • Abnormal postural reflex
  • Absent body position sense
  • Absent bone in leg
  • Accessory movements
  • Akathisia
  • Akinetic rigid syndrome
  • Ambitendence
  • Ankle reflexes unequal
  • Apraxia
  • Arthropathy associated with a neurological disorder
  • Arthropathy of the ankle AND/OR foot associated with a neurological disorder
  • Asymmetrical skull
  • Attacks of floppiness
  • Attacks of rigidity
  • Automatic compliance
  • Axis pressure pain
  • Barany's sign
  • Barber's chair sign
  • Barber's chair sign positive
  • Beevor's sign
  • Bite of unidentified snake with neurological signs
  • Bone remodeling
  • Bone tenderness
  • Bowstring sign
  • Brudzinski's sign
  • Brudzinski's sign positive
  • Bryant's sign
  • Cannot shrug shoulder
  • Catatonic posturing
  • Catatonic rigidity
  • Catch
  • Cerebellopontine angle syndrome
  • Chaddock's reflex
  • Chvostek sign positive
  • Ciliospinal reflex positive
  • Compensating movements
  • Complaining of backache
  • Cremasteric reflex positive
  • Crossed leg raising sign
  • Crumples to floor
  • Dawbarn's sign
  • Decerebrate rigidity
  • Decorticate rigidity
  • Decreased circumduction
  • Decreased flexion
  • Decreased gastric tonus
  • Decreased range of cervical spine extension
  • Decreased range of cervical spine flexion
  • Decreased range of cervical spine flexion and extension
  • Decreased torsion
  • Decremental response to repetitive nerve stimulation
  • Difficulty accepting base of support
  • Difficulty alternating between sitting and standing
  • Difficulty avoiding obstacles when running
  • Difficulty balancing
  • Difficulty balancing when sitting
  • Difficulty balancing when standing
  • Difficulty bending
  • Difficulty bending down
  • Difficulty bending to pick up object without falling
  • Difficulty bending to reach feet
  • Difficulty bridging
  • Difficulty catching
  • Difficulty climbing
  • Difficulty conforming to a position
  • Difficulty controlling head posture
  • Difficulty controlling pelvic posture
  • Difficulty controlling posture
  • Difficulty controlling shoulder girdle posture
  • Difficulty controlling trunk posture
  • Difficulty crawling
  • Difficulty crouching
  • Difficulty gripping
  • Difficulty hitting
  • Difficulty holding drinks
  • Difficulty hopping
  • Difficulty in walking backward pulling large toy
  • Difficulty in walking carrying large toy
  • Difficulty initiating running
  • Difficulty jumping
  • Difficulty kicking
  • Difficulty kneeling
  • Difficulty lying down
  • Difficulty maintaining a position
  • Difficulty maintaining a sitting position
  • Difficulty maintaining a standing position
  • Difficulty making a fist
  • Difficulty moving all four limbs
  • Difficulty moving arm
  • Difficulty moving foot
  • Difficulty moving from a position
  • Difficulty moving from lying to sitting
  • Difficulty moving hand
  • Difficulty moving head
  • Difficulty moving leg
  • Difficulty moving within a position
  • Difficulty negotiating corners when running
  • Difficulty performing hand functions
  • Difficulty pulling to standing from sitting
  • Difficulty pushing and pulling a large object around floor
  • Difficulty pushing and pulling a large wheeled toy backwards
  • Difficulty pushing and pulling a large wheeled toy forwards
  • Difficulty pushing and pulling a small wheeled toy forwards
  • Difficulty pushing and pulling while running
  • Difficulty reaching
  • Difficulty rising from squatting
  • Difficulty rising from squatting without using hands
  • Difficulty rolling
  • Difficulty rolling on to side
  • Difficulty rolling over
  • Difficulty running
  • Difficulty running down a slope
  • Difficulty running down hill
  • Difficulty running down stairs
  • Difficulty running down steps
  • Difficulty running on flat
  • Difficulty running up a slope
  • Difficulty running up hill
  • Difficulty running up stairs
  • Difficulty running up steps
  • Difficulty shuffling
  • Difficulty sitting
  • Difficulty sitting down
  • Difficulty sitting up
  • Difficulty skipping
  • Difficulty skipping on alternate feet
  • Difficulty squatting
  • Difficulty standing
  • Difficulty standing alone
  • Difficulty standing from sitting
  • Difficulty standing on one leg
  • Difficulty standing up
  • Difficulty standing up alone
  • Difficulty stopping running
  • Difficulty straightening up
  • Difficulty throwing
  • Difficulty tiptoeing
  • Difficulty transferring weight
  • Difficulty turning
  • Difficulty turning body
  • Difficulty turning head
  • Difficulty walking heel to toe
  • Difficulty walking up a slope
  • Diffuse motor nerve conduction abnormality
  • Discomfort
  • Dissociated spinal nerve sensory loss
  • Does hold drinks
  • Does not attempt to crawl
  • Does not attempt to run
  • Does not avoid obstacles when running
  • Does not balance when sitting
  • Does not balance when standing
  • Does not bend
  • Does not bend down
  • Does not bend to pick up object without falling
  • Does not bend to reach feet
  • Does not bridge
  • Does not catch
  • Does not climb
  • Does not conform to a position
  • Does not control head posture
  • Does not control pelvic posture
  • Does not control posture
  • Does not control shoulder girdle posture
  • Does not control trunk posture
  • Does not crawl
  • Does not grip
  • Does not hit
  • Does not hold drinks
  • Does not hop
  • Does not initiate running
  • Does not jump
  • Does not kick
  • Does not kneel
  • Does not lie down
  • Does not maintain a position
  • Does not maintain a sitting position
  • Does not maintain a standing position
  • Does not make a fist
  • Does not move all four limbs
  • Does not move arm
  • Does not move foot
  • Does not move from a position
  • Does not move from lying to sitting
  • Does not move hand
  • Does not move head
  • Does not move leg
  • Does not move within a position
  • Does not negotiate corners when running
  • Does not perform hand functions
  • Does not pull to standing from sitting
  • Does not push and pull a large object around floor
  • Does not push and pull a large wheeled toy backwards
  • Does not push and pull a small wheeled toy forwards
  • Does not push and pull while running
  • Does not reach
  • Does not rise from squatting
  • Does not rise from squatting without using hands
  • Does not roll
  • Does not roll on to side
  • Does not roll over
  • Does not run
  • Does not run down a slope
  • Does not run down hill
  • Does not run down stairs
  • Does not run down steps
  • Does not run on flat
  • Does not run up a slope
  • Does not run up hill
  • Does not run up stairs
  • Does not run up steps
  • Does not sit
  • Does not sit down
  • Does not sit up
  • Does not skip
  • Does not skip on alternate feet
  • Does not skip on one foot
  • Does not squat
  • Does not stand
  • Does not stand alone
  • Does not stand from sitting
  • Does not stand on one leg
  • Does not stand up
  • Does not stand up alone
  • Does not stop running
  • Does not straighten up
  • Does not throw
  • Does not tiptoe
  • Does not to push and pull a large wheeled toy forwards
  • Does not transfer weight
  • Does not turn
  • Does not turn body
  • Does not turn head
  • Does not walk
  • Does not walk backward pulling large toy
  • Does not walk down a slope
  • Does not walk heel to toe
  • Does not walk up hill
  • Does not walk up stairs
  • Does not walk up step
  • Does rise from squatting without using hands
  • Doorbell sign
  • Dysmorphic facies
  • Echopraxia
  • Empty delta sign
  • Extrapyramidal sign
  • Fibular drift
  • Finding of intracranial pressure
  • Finding of movement of vertebral bone
  • Fix with unaffected side
  • Flail motion
  • Floppy infant syndrome
  • Fluctuating muscle tone
  • Focal motor nerve conduction slowing
  • Focal motor weakness
  • Focal sensory nerve conduction slowing
  • Forced grasping
  • Freezing in one posture
  • Froment's sign positive
  • Gaenslen's sign
  • Gait dyspraxia
  • Galeazzi's sign
  • General difficulty in moving
  • Gluteal syndrome
  • Gowers sign
  • Gowers sign present
  • Gross motor disability
  • Growing pains
  • Harrison's sulcus
  • Hoover's sign
  • Immobile
  • Impaired body position sense
  • Impaired joint position sense
  • Impaired psychomotor performance
  • Impaired vibration sense of left foot
  • Impingement sign
  • Increased torsion
  • Insufficient power to move joint
  • Intensive care neurological disorder
  • Joint warm
  • Kanavel's four cardinal signs
  • Kehr's sign
  • Kernig's sign
  • Kernig's sign positive
  • Lack of spontaneous movement
  • Lacks lumbar extension
  • Lead pipe muscle rigidity
  • Legs give way - falling
  • Lethal catatonia
  • Liepmann's apraxia
  • Lordosis absent
  • Loss of agility
  • Loss of control of movement
  • Loss of trunk control
  • Low intracranial pressure
  • Lumbar spine - tender
  • Mass reflex absent
  • Mental handicap
  • Milking sign
  • Miscellaneous central nervous system sign AND/OR symptom
  • Mixed nerve conduction block
  • Motor dysfunction
  • Motor function not associated with locomotion
  • Motor nerve conduction block
  • Motor response to deep glabella pressure absent
  • Motor response to deep glabella pressure present
  • Mulder's click
  • Multifactorial gait problem
  • Muscle irritability
  • Muscle power unequal
  • Muscle tension
  • Musculoskeletal alteration
  • Musculoskeletal asymmetry
  • Musculoskeletal decompression sickness
  • Musculoskeletal pain
  • Musculoskeletal symptom
  • Musculoskeletal tenderness
  • Myofascial pain
  • Myotonic warm-up phenomenon
  • Myotonic warm-up phenomenon - hand grip
  • Nervous system problem
  • Nervous system symptoms
  • Neurological deficit
  • Neurological muscle weakness
  • Neurological muscular paralysis
  • Neurological pain disorder
  • Neurological symptom
  • Neurological symptom changes
  • No active muscle contraction
  • On examination - abdominal reflex
  • On examination - Brudzinski's sign
  • On examination - central nervous system deficit
  • On examination - ciliospinal reflex
  • On examination - ciliospinal reflex positive
  • On examination - cremasteric reflex positive
  • On examination - defecation reflex
  • On examination - drooping/round shouldered
  • On examination - foot abnormal
  • On examination - in turning feet
  • On examination - joint - passive greater than active movement
  • On examination - joint position sense
  • On examination - joint position sense absent
  • On examination - joint position sense reduced
  • On examination - joint-flicker of movement
  • On examination - mass reflex
  • On examination - mass reflex absent
  • On examination - mass reflex present
  • On examination - micturition reflex
  • On examination - muscle hypertrophy present
  • On examination - muscle power unequal
  • On examination - muscle rigid - cogwheel
  • On examination - muscle rigid-clasp knife
  • On examination - muscle tone atonic
  • On examination - muscle tone hypertonic
  • On examination - muscle tone hypotonic
  • On examination - muscular irritability
  • On examination - pain influenced posture
  • On examination - past pointing
  • On examination - past pointing present
  • On examination - pharyngeal gag reflex positive
  • On examination - plantar - left=equivocal
  • On examination - plantar - right=equivocal
  • On examination - plantar response on left - extensor
  • On examination - plantar response on left - flexor
  • On examination - plantar response on right - extensor
  • On examination - plantar response on right - flexor
  • On examination - raised intracranial pressure
  • On examination - rigid muscle
  • On examination - sensory suppression
  • On examination - sign - in nerve
  • On examination - snuff box tenderness
  • On examination - steroid facies
  • On examination - straight leg raising reduced on left
  • On examination - straight leg raising reduced on right
  • Oppenheim's reflex
  • Ortolani's click
  • Pain radiating to lumbar region of back
  • Pain radiating to thoracic region left side
  • Pain radiating to thoracic region right side
  • Partial bilateral paralysis
  • Past pointing present
  • Pathognomic facies
  • Pharyngeal paresis
  • Plantar response-L=flexor
  • Plantar response-R=flexor
  • Polymyalgia
  • Poor balance
  • Poor manual dexterity
  • Poor muscle tone
  • Poor posture
  • Prayer sign positive
  • Pull forwards in flexion
  • Push with unaffected side
  • Pusher syndrome
  • Raised intracranial pressure
  • Romberg sign
  • Romberg's sign positive
  • Rotation of vertebra
  • Scapulalgia
  • Sciatic nerve stretch test negative
  • Sensation of heaviness in limbs
  • Sensory denervation
  • Sensory discomfort
  • Sensory disorder
  • Sensory nerve conduction block
  • Shoulder-pad sign
  • Shrug sign
  • Slow on legs
  • Spinal curvature convex to the left
  • Spinal curvature convex to the right
  • Spinal nerve sensory loss
  • Steinberg thumb sign
  • Stress-induced muscle tension
  • Suprapatellar jerk abnormal
  • Suprapatellar jerk diminished
  • Suprapatellar jerk reflexes unequal
  • Swelling of musculoskeletal structure
  • Symptom: trunk posterior
  • Temporary loss of memory
  • Tender point
  • Tenderness of tendon
  • Tendon triggering
  • Thomas' sign
  • Tinel's sign positive
  • Toeing-in
  • Transient neurological symptoms
  • Traumatic division of tendon
  • Trendelenburg sign
  • Trendelenburg sign positive
  • Triceps reflex absent
  • Trismus present
  • Trousseau sign positive
  • Tumor flare
  • Unable to alternate between sitting and standing
  • Unable to avoid obstacles when running
  • Unable to balance when sitting
  • Unable to balance when standing
  • Unable to bend
  • Unable to bend down
  • Unable to bend to pick up object without falling
  • Unable to bend to reach feet
  • Unable to bridge
  • Unable to catch
  • Unable to climb
  • Unable to conform to a position
  • Unable to control head posture
  • Unable to control pelvic posture
  • Unable to control shoulder girdle posture
  • Unable to control trunk posture
  • Unable to crawl
  • Unable to crouch
  • Unable to grip
  • Unable to hit
  • Unable to hold drinks
  • Unable to hop
  • Unable to initiate running
  • Unable to jump
  • Unable to kick
  • Unable to kick legs
  • Unable to kneel
  • Unable to lie down
  • Unable to maintain a position
  • Unable to maintain a sitting position
  • Unable to maintain a standing position
  • Unable to make a fist
  • Unable to move
  • Unable to move all four limbs
  • Unable to move arm
  • Unable to move foot
  • Unable to move from a position
  • Unable to move from lying to sitting
  • Unable to move hand
  • Unable to move head
  • Unable to move leg
  • Unable to move within a position
  • Unable to negotiate corners when running
  • Unable to perform hand functions
  • Unable to pull to standing from sitting
  • Unable to push and pull a large object around floor
  • Unable to push and pull a large wheeled toy backwards
  • Unable to push and pull a large wheeled toy forwards
  • Unable to push and pull a small wheeled toy forwards
  • Unable to push and pull while running
  • Unable to reach
  • Unable to rise from squatting
  • Unable to rise from squatting without using hands
  • Unable to roll
  • Unable to roll on to side
  • Unable to roll over
  • Unable to run
  • Unable to run down a slope
  • Unable to run down hill
  • Unable to run down stairs
  • Unable to run down steps
  • Unable to run on flat
  • Unable to run up a slope
  • Unable to run up hill
  • Unable to run up stairs
  • Unable to run up steps
  • Unable to sit
  • Unable to sit down
  • Unable to sit up
  • Unable to skip
  • Unable to skip on alternate feet
  • Unable to skip on one foot
  • Unable to squat
  • Unable to stand
  • Unable to stand from sitting
  • Unable to stand on one leg
  • Unable to stand up
  • Unable to stand up alone
  • Unable to stop running
  • Unable to straighten up
  • Unable to throw
  • Unable to tiptoe
  • Unable to transfer weight
  • Unable to turn
  • Unable to turn body
  • Unable to turn head
  • Unable to walk backward pulling large toy
  • Unable to walk carrying large toy
  • Unable to walk heel to toe
  • Uncompensated sensory deficit
  • Uneven movement
  • Unsteadiness present
  • Unsteady when standing
  • Unsteady when turning
  • Vertigo, acute onset with vomiting and inability to stand
  • Wilson's pronator sign
  • Wrist sign

Index to Diseases and Injuries

References found for the code 781.99 in the Index of Diseases and Injuries:


Information for Patients


Muscle Disorders

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.

Causes of muscle disorders include:

  • Injury or overuse, such as sprains or strains, cramps or tendinitis
  • A genetic disorder, such as muscular dystrophy
  • Some cancers
  • Inflammation, such as myositis
  • Diseases of nerves that affect muscles
  • Infections
  • Certain medicines

Sometimes the cause of muscle disorders is unknown.


[Read More]

Neurologic Diseases

The brain, spinal cord, and nerves make up the nervous system. Together they control all the workings of the body. When something goes wrong with a part of your nervous system, you can have trouble moving, speaking, swallowing, breathing, or learning. You can also have problems with your memory, senses, or mood.

There are more than 600 neurologic diseases. Major types include:

  • Diseases caused by faulty genes, such as Huntington's disease and muscular dystrophy
  • Problems with the way the nervous system develops, such as spina bifida
  • Degenerative diseases, where nerve cells are damaged or die, such as Parkinson's disease and Alzheimer's disease
  • Diseases of the blood vessels that supply the brain, such as stroke
  • Injuries to the spinal cord and brain
  • Seizure disorders, such as epilepsy
  • Cancer, such as brain tumors
  • infections, such as meningitis

[Read More]

ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • Type 1 Excludes Notes - A type 1 Excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.