Specific code 2015 ICD-9-CM Diagnosis Code 977.9
Poisoning by unspecified drug or medicinal substance
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 977.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 977.9 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 977.9 converts approximately to:
  • 2015/16 ICD-10-CM T50.901A Poisoning by unspecified drugs, medicaments and biological substances, accidental (unintentional), initial encounter
    Or:
  • 2015/16 ICD-10-CM T50.902A Poisoning by unspecified drugs, medicaments and biological substances, intentional self-harm, initial encounter
    Or:
  • 2015/16 ICD-10-CM T50.903A Poisoning by unspecified drugs, medicaments and biological substances, assault, initial encounter
    Or:
  • 2015/16 ICD-10-CM T50.904A Poisoning by unspecified drugs, medicaments and biological substances, undetermined, initial encounter
Approximate Synonyms
  • Drug overdose
  • Drug overdose, nonaccidental
  • Non-accidental drug overdose
  • Poisoning by drug
  • Poisoning by drug AND/OR medicinal substance
  • Poisoning by drug or medicinal substance
Clinical Information
  • An adverse effect of a drug used therapeutically or diagnostically
  • Manifestations of the adverse effects of drugs administered therapeutically or in the course of diagnostic techniques. It does not include accidental or intentional poisoning for which specific headings are available
ICD-9-CM Volume 2 Index entries containing back-references to 977.9:
  • Allergy, allergic (reaction) 995.3
    • drug, medicinal substance, and biological (any) (correct medicinal substance properly administered) (external) (internal) 995.27
      • wrong substance given or taken NEC 977.9
        • specified drug or substance - see Table of Drugs and Chemicals
  • Anaphylactic reaction or shock (correct substance properly administered) 995.0
    • due to
      • administration of blood and blood products 999.41
      • chemical - see Table of Drugs and Chemicals
      • correct medicinal substance properly administered 995.0
      • drug or medicinal substance
        • correct substance properly administered 995.0
        • overdose or wrong substance given or taken 977.9
          • specified drug - see Table of Drugs and Chemicals
      • following sting(s) 989.5
      • food 995.60
      • immunization 999.42
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
      • serum NEC 999.49
  • Arthus phenomenon 995.21
    • due to
      • correct substance properly administered 995.21
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
      • serum 999.59
  • Constipation 564.00
    • drug induced
      • correct substance properly administered 564.09
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Dermatitis (allergic) (contact) (occupational) (venenata) 692.9
    • due to
      • acetone 692.2
      • acids 692.4
      • adhesive plaster 692.4
      • alcohol (skin contact) (substances classifiable to 980.0-980.9) 692.4
      • alkalis 692.4
      • allergy NEC 692.9
      • ammonia (household) (liquid) 692.4
      • animal
      • arnica 692.3
      • arsenic 692.4
      • blister beetle 692.89
      • cantharides 692.3
      • carbon disulphide 692.2
      • caterpillar 692.89
      • caustics 692.4
      • cereal (ingested) 693.1
      • chemical(s) NEC 692.4
      • chlorocompounds 692.2
      • coffee (ingested) 693.1
      • cold weather 692.89
      • cosmetics 692.81
      • cyclohexanes 692.2
      • dander, animal (cat) (dog) 692.84
      • deodorant 692.81
      • detergents 692.0
      • dichromate 692.4
      • drugs and medicinals (correct substance properly administered) (internal use) 693.0
        • external (in contact with skin) 692.3
          • wrong substance given or taken 976.9
            • specified substance - see Table of Drugs and Chemicals
        • wrong substance given or taken 977.9
          • specified substance - see Table of Drugs and Chemicals
      • dyes 692.89
      • epidermophytosis - see Dermatophytosis
      • esters 692.2
      • external irritant NEC 692.9
      • eye shadow 692.81
      • fish (ingested) 693.1
      • flour (ingested) 693.1
      • food (ingested) 693.1
        • in contact with skin 692.5
      • fruit (ingested) 693.1
      • fungicides 692.3
      • furs 692.84
      • glycols 692.2
      • greases NEC 692.1
      • hair, animal (cat) (dog) 692.84
      • hair dyes 692.89
      • hot
        • objects and materials - see Burn, by site
        • weather or places 692.89
      • hydrocarbons 692.2
      • infrared rays, except from sun 692.82
        • solar NEC (see also Dermatitis, due to, sun) 692.70
      • ingested substance 693.9
        • drugs and medicinals (see also Dermatitis, due to, drugs and medicinals) 693.0
        • food 693.1
        • specified substance NEC 693.8
      • ingestion or injection of
        • chemical 693.8
        • drug (correct substance properly administered) 693.0
          • wrong substance given or taken 977.9
            • specified substance - see Table of Drugs and Chemicals
      • insecticides 692.4
      • internal agent 693.9
        • drugs and medicinals (see also Dermatitis, due to, drugs and medicinals) 693.0
        • food (ingested) 693.1
          • in contact with skin 692.5
        • specified agent NEC 693.8
      • iodine 692.3
      • iodoform 692.3
      • irradiation 692.82
      • jewelry 692.83
      • keratolytics 692.3
      • ketones 692.2
      • lacquer tree (Rhus verniciflua) 692.6
      • light (sun) NEC (see also Dermatitis, due to, sun) 692.70
      • low temperature 692.89
      • mascara 692.81
      • meat (ingested) 693.1
      • mercury, mercurials 692.3
      • metals 692.83
      • milk (ingested) 693.1
      • Neomycin 692.3
      • nylon 692.4
      • oils NEC 692.1
      • paint solvent 692.2
      • pediculocides 692.3
      • petroleum products (substances classifiable to 981) 692.4
      • phenol 692.3
      • photosensitiveness, photosensitivity (sun) 692.72
      • plants NEC 692.6
      • plasters, medicated (any) 692.3
      • plastic 692.4
      • poison
        • ivy (Rhus toxicodendron) 692.6
        • oak (Rhus diversiloba) 692.6
        • plant or vine 692.6
        • sumac (Rhus venenata) 692.6
        • vine (Rhus radicans) 692.6
      • preservatives 692.89
      • primrose (primula) 692.6
      • primula 692.6
      • radiation 692.82
        • sun NEC (see also Dermatitis, due to, sun) 692.70
        • tanning bed 692.82
      • radioactive substance 692.82
      • radium 692.82
      • ragweed (Senecio jacobae) 692.6
      • Rhus (diversiloba) (radicans) (toxicodendron) (venenata) (verniciflua) 692.6
      • rubber 692.4
      • scabicides 692.3
      • Senecio jacobae 692.6
      • solar radiation - see Dermatitis, due to, sun
      • solvents (any) (substances classifiable to (982.0-982.8) 692.2
      • specified agent NEC 692.89
      • sun 692.70
      • sunburn (see also Sunburn) 692.71
      • sunshine NEC (see also Dermatitis, due to, sun) 692.70
      • tanning bed 692.82
      • tetrachlorethylene 692.2
      • toluene 692.2
      • topical medications 692.3
      • turpentine 692.2
      • ultraviolet rays, except from sun 692.82
        • sun NEC (see also Dermatitis, due to, sun) 692.70
      • vaccine or vaccination (correct substance properly administered) 693.0
        • wrong substance given or taken
          • bacterial vaccine 978.8
            • specified - see Table of Drugs and Chemicals
          • other vaccines NEC 979.9
            • specified - see Table of Drugs and Chemicals
      • varicose veins (see also Varicose, vein, inflamed or infected) 454.1
      • x-rays 692.82
  • Disease, diseased - see also Syndrome
    • Lyell's (toxic epidermal necrolysis) 695.15
      • due to drug
        • correct substance properly administered 695.15
        • overdose or wrong substance given or taken 977.9
          • specific drug - see Table of Drugs and Chemicals
  • Effect, adverse NEC
    • drugs and medicinals 995.20
      • correct substance properly administered 995.20
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Epidermolysis
    • necroticans combustiformis 695.15
      • due to drug
        • correct substance properly administered 695.15
        • overdose or wrong substance given or taken 977.9
          • specified drug - see Table of Drugs and Chemicals
  • Ingestion
    • drug or medicinal substance
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Intolerance
    • drug
      • correct substance properly administered 995.27
      • wrong substance given or taken in error 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Lyell's disease or syndrome (toxic epidermal necrolysis) 695.15
    • due to drug
      • correct substance properly administered 695.15
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Medicine poisoning (by overdose) (wrong substance given or taken in error) 977.9
    • specified drug or substance - see Table of Drugs and Chemicals
  • Narcosis
    • due to drug
      • correct substance properly administered 780.09
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Necrolysis, toxic epidermal 695.15
    • due to drug
      • correct substance properly administered 695.15
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Overdose overdosage (drug) 977.9
    • specified drug or substance - see Table of Drugs and Chemicals
  • Polyneuropathy (peripheral) 356.9
    • due to
      • antitetanus serum 357.6
      • arsenic 357.7
      • drug or medicinal substance 357.6
        • correct substance properly administered 357.6
        • overdose or wrong substance given or taken 977.9
          • specified drug - see Table of Drugs and Chemicals
      • lack of vitamin NEC 269.2 [357.4]
      • lead 357.7
      • organophosphate compounds 357.7
      • pellagra 265.2 [357.4]
      • porphyria 277.1 [357.4]
      • serum 357.6
      • toxic agent NEC 357.7
  • Porphyria (acute) (congenital) (constitutional) (erythropoietic) (familial) (hepatica) (idiopathic) (idiosyncratic) (intermittent) (latent) (mixed hepatic) (photosensitive) (South African genetic) (Swedish) 277.1
    • due to drugs
      • correct substance properly administered 277.1
      • overdose or wrong substance given or taken 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Reaction
    • drug NEC (see also Table of Drugs and Chemicals) 995.20
      • allergic - see also Allergy, drug 995.27
      • correct substance properly administered 995.20
      • obstetric anesthetic or analgesic NEC 668.9
        • affecting fetus or newborn 763.5
        • specified drug - see Table of Drugs and Chemicals
      • overdose or poisoning 977.9
        • specified drug - see Table of Drugs and Chemicals
      • specific to newborn 779.4
      • transmitted via placenta or breast milk - see Absorption, drug, through placenta
      • withdrawal NEC 292.0
        • infant of dependent mother 779.5
      • wrong substance given or taken in error 977.9
        • specified drug - see Table of Drugs and Chemicals
  • Shock 785.50
    • due to
      • drug 995.0
        • correct substance properly administered 995.0
        • overdose or wrong substance given or taken 977.9
          • specified drug - see Table of Drugs and Chemicals
      • food - see Anaphylactic shock, due to, food
  • Syndrome - see also Disease
    • Lyell's (toxic epidermal necrolysis) 695.15
      • due to drug
        • correct substance properly administered 695.15
        • overdose or wrong substance given or taken 977.9
          • specified drug - see Table of Drugs and Chemicals
  • Wrong drug (given in error) NEC 977.9
    • specified drug or substance - see Table of Drugs and Chemicals
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 977.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.