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ICD-10 Clinical Concepts for Internal Medicine

Internal medicine providers manage a wide variety of conditions, ranging from chronic illnesses to acute medical issues. Below is a breakdown of some of the most commonly used ICD-10 codes for internal medicine categorized by condition type:

  • Abdominal Pain

    • R10.0Acute abdomen Billable

    • R10.10Upper abdominal pain, unspecified Billable

    • R10.11Right upper quadrant pain Billable

    • R10.12Left upper quadrant pain Billable

    • R10.13Epigastric pain Billable

    • R10.2Pelvic and perineal pain Billable

    • R10.30Lower abdominal pain, unspecified Billable

    • R10.31Right lower quadrant pain Billable

    • R10.32Left lower quadrant pain Billable

    • R10.33Periumbilical pain Billable

    • R10.84Generalized abdominal pain Billable

    • R10.9Unspecified abdominal pain * Billable

  • Acute Respiratory Infections

    • J02.8Acute pharyngitis due to other specified organisms Billable

    • J02.9Acute pharyngitis, unspecified * Billable

    • J06.9Acute upper respiratory infection, unspecified * Billable

    • J20.0Acute bronchitis due to Mycoplasma pneumoniae Billable

    • J20.1Acute bronchitis due to Hemophilus influenzae Billable

    • J20.2Acute bronchitis due to streptococcus Billable

    • J20.3Acute bronchitis due to coxsackievirus Billable

    • J20.4Acute bronchitis due to parainfluenza virus Billable

    • J20.5Acute bronchitis due to respiratory syncytial virus Billable

    • J20.6Acute bronchitis due to rhinovirus Billable

    • J20.7Acute bronchitis due to echovirus Billable

    • J20.8Acute bronchitis due to other specified organisms Billable

    • J20.9Acute bronchitis, unspecified * Billable

  • Back and Neck Pain

    • M54.2Cervicalgia Billable

    • M54.5Low back pain Non-Billable

    • M54.6Pain in thoracic spine Billable

    • M54.89Other dorsalgia Billable

    • M54.9Dorsalgia, unspecified * Billable

  • Chest Pain

    • R07.1Chest pain on breathing Billable

    • R07.2Precordial pain Billable

    • R07.81Pleurodynia Billable

    • R07.82Intercostal pain Billable

    • R07.89Other chest pain Billable

    • R07.9Chest pain, unspecified * Billable

  • Diabetes Mellitus w/o Complications Type 2

    • E11.9Type 2 diabetes mellitus without complications Billable

  • General Medical Examination

    • Z00.00Encounter for general adult medical examination without abnormal findings Billable

    • Z00.01Encounter for general adult medical examination with abnormal findings Billable

  • Headache

    • R51Headache Non-Billable

  • Hypertension

    • I10Essential (primary) hypertension Billable

  • Pain in Joint

    • M25.50Pain in unspecified joint * Billable

    • M25.511Pain in right shoulder Billable

    • M25.512Pain in left shoulder Billable

    • M25.519Pain in unspecified shoulder * Billable

    • M25.521Pain in right elbow Billable

    • M25.522Pain in left elbow Billable

    • M25.529Pain in unspecified elbow * Billable

    • M25.531Pain in right wrist Billable

    • M25.532Pain in left wrist Billable

    • M25.539Pain in unspecified wrist * Billable

    • M25.551Pain in right hip Billable

    • M25.552Pain in left hip Billable

    • M25.559Pain in unspecified hip * Billable

    • M25.561Pain in right knee Billable

    • M25.562Pain in left knee Billable

    • M25.569Pain in unspecified knee * Billable

    • M25.571Pain in right ankle and joints of right foot Billable

    • M25.572Pain in left ankle and joints of left foot Billable

    • M25.579Pain in unspecified ankle and joints of unspecified foot * Billable

  • Pain in Limb

    • M79.601Pain in right arm Billable

    • M79.602Pain in left arm Billable

    • M79.603Pain in arm, unspecified * Billable

    • M79.604Pain in right leg Billable

    • M79.605Pain in left leg Billable

    • M79.606Pain in leg, unspecified * Billable

    • M79.609Pain in unspecified limb Billable

    • M79.621Pain in right upper arm Billable

    • M79.622Pain in left upper arm Billable

    • M79.629Pain in unspecified upper arm * Billable

    • M79.631Pain in right forearm Billable

    • M79.632Pain in left forearm Billable

    • M79.639Pain in unspecified forearm * Billable

    • M79.641Pain in right hand Billable

    • M79.642Pain in left hand Billable

    • M79.643Pain in unspecified hand * Billable

    • M79.644Pain in right finger(s) Billable

    • M79.645Pain in left finger(s) Billable

    • M79.646Pain in unspecified finger(s) * Billable

    • M79.651Pain in right thigh Billable

    • M79.652Pain in left thigh Billable

    • M79.659Pain in unspecified thigh * Billable

    • M79.661Pain in right lower leg Billable

    • M79.662Pain in left lower leg Billable

    • M79.669Pain in unspecified lower leg * Billable

    • M79.671Pain in right foot Billable

    • M79.672Pain in left foot Billable

    • M79.673Pain in unspecified foot * Billable

    • M79.674Pain in right toe(s) Billable

    • M79.675Pain in left toe(s) Billable

    • M79.676Pain in unspecified toe(s) * Billable

  • Other Forms Of Heart Disease

    • I48.0Paroxysmal atrial fibrillation Billable

    • I48.2Chronic atrial fibrillation Non-Billable

    • I48.91Unspecified atrial fibrillation * Billable

  • Urinary Tract Infection, Cystitis

    • N30.00Acute cystitis without hematuria Billable

    • N30.01Acute cystitis with hematuria Billable

    • N30.10Interstitial cystitis (chronic) without hematuria Billable

    • N30.11Interstitial cystitis (chronic) with hematuria Billable

    • N30.20Other chronic cystitis without hematuria Billable

    • N30.21Other chronic cystitis with hematuria Billable

    • N30.30Trigonitis without hematuria Billable

    • N30.31Trigonitis with hematuria Billable

    • N30.40Irradiation cystitis without hematuria Billable

    • N30.41Irradiation cystitis with hematuria Billable

    • N30.80Other cystitis without hematuria Billable

    • N30.81Other cystitis with hematuria Billable

    • N30.90Cystitis, unspecified without hematuria Billable

    • N30.91Cystitis, unspecified with hematuria Billable

    • N39.0Urinary tract infection, site not specified * Billable

* Codes with a greater degree of specificity should be considered first.