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Common Codes for Internal Medicine

Review common ICD-10 diagnosis codes associated with your specialty. Following is list of common codes derived from a study* performed in late 2013 which referenced a blend of commercial, state, and federal payer data. The study focused on codes encountered in an outpatient professional setting.

Please note that the list illustrates specific codes for your specialty; however, the codes most frequently used by your practice will vary based on geographic location, patient population, payer mix, and other differentiating factors.

For a comprehensive list of ICD-10 diagnosis codes, go to Quick References and download the following files by clicking on the appropriate links:

  • 2015 ICD-10-CM Index to Diseases and Injuries
  • 2015 ICD-10-CM Tabular List of Diseases and Injuries

* Study was conducted using CODES THAT MATTER®, a registered service mark of The North Highland Company. Copyright ©2013 The North Highland Company. All Rights Reserved. 450-0210A-000.

Abdominal Pain (ICD-9-CM 789.00 to 789.09 range)

ICD-10-CM Codes
R10.0 Acute abdomen
R10.10 Upper abdominal pain, unspecified
R10.11 Right upper quadrant pain
R10.12 Left upper quadrant pain
R10.13 Epigastric pain
R10.2 Pelvic and perineal pain
R10.30 Lower abdominal pain
R10.31 Right lower quadrant pain
R10.32 Left lower quadrant pain
R10.33 Periumbilical pain
R10.84 Generalized abdominal pain
R10.9* Unspecified abdominal pain
*Codes with a greater degree of specificity should be considered first.

Acute Respiratory Infections (ICD-9-CM 462, 465.9, 466.0)
[Note: Organisms should be specified where possible]

ICD-10-CM Codes
J02.8 Acute pharyngitis due to other specified organisms
J02.9* Acute pharyngitis, unspecified
J06.9* Acute upper respiratory infection, unspecified
J20.0 Acute bronchitis due to Mycoplasma pneumoniae
J20.1 Acute bronchitis due to Hemophilus influenzae
J20.2 Acute bronchitis due to streptococcus
J20.3 Acute bronchitis due to coxsackievirus
J20.4 Acute bronchitis due to parainfluenza virus
J20.5 Acute bronchitis due to respiratory syncytial virus
J20.6 Acute bronchitis due to rhinovirus
J20.7 Acute bronchitis due to echovirus
J20.8 Acute bronchitis due to other specified organisms
J20.9* Acute bronchitis, unspecified
*Codes with a greater degree of specificity should be considered first.

Back and Neck Pain (Selected) (ICD-9-CM 723.1, 724.1, 724.2, 724.5)

ICD-10-CM Codes
M54.2 Cervicalgia
M54.5 Low back pain
M54.6 Pain in thoracic spine
M54.89 Other dorsalgia
M54.9* Dorsalgia, unspecified
*Codes with a greater degree of specificity should be considered first.

Chest Pain (ICD-9-CM 786.50 to 786.59 range)

ICD-10-CM Codes
R07.1 Chest pain on breathing
R07.2 Precordial pain
R07.81 Pleurodynia
R07.82 Intercostal pain
R07.89 Other chest pain
R07.9* Chest pain, unspecified
*Codes with a greater degree of specificity should be considered first.

Diabetes Mellitus w/o Complications Type 2 (ICD-9-CM 250.00)

ICD-10-CM Codes
E11.9 Type 2 diabetes mellitus without complications

General Medical Examination (ICD-9-CM V70.0)

ICD-10-CM Codes
Z00.00 Encounter for general adult medical exam without abnormal findings
Z00.01 Encounter for general adult medical exam with abnormal findings

Headache (ICD-9-CM 784.0)

ICD-10-CM Codes
R51 Headache

Hypertension (ICD-9-CM 401.9)

ICD-10-CM Codes
I10 Essential (primary) hypertension

Pain in Joint (ICD-9-CM 719.40 to 719.49 range)

ICD-10-CM Codes
M25.511 Pain in right shoulder
M25.512 Pain in left shoulder
M25.519* Pain in unspecified shoulder
M25.521 Pain in right elbow
M25.522 Pain in left elbow
M25.529* Pain in unspecified elbow
M25.531 Pain in right wrist
M25.532 Pain in left wrist
M25.539* Pain in unspecified wrist
M25.551 Pain in right hip
M25.552 Pain in left hip
M25.559* Pain in unspecified hip
M25.561 Pain in right knee
M25.562 Pain in left knee
M25.569* Pain in unspecified knee
M25.571 Pain in right ankle and joints of right foot
M25.572 Pain in left ankle and joints of left foot
M25.579* Pain in unspecified ankle and joints of unspecified foot
M25.50* Pain in unspecified joint
*Codes with a greater degree of specificity should be considered first.

Pain in Limb (ICD-9-CM 729.5)

ICD-10-CM Codes
M79.601 Pain in right arm
M79.602 Pain in left arm
M79.603* Pain in arm, unspecified
M79.604 Pain in right leg
M79.605 Pain in left leg
M79.606* Pain in leg, unspecified
M79.609 Pain in unspecified limb
M79.621 Pain in right upper arm
M79.622 Pain in left upper arm
M79.629* Pain in unspecified upper arm
M79.631 Pain in right forearm
M79.632 Pain in left forearm
M79.639* Pain in unspecified forearm
M79.641 Pain in right hand
M79.642 Pain in left hand
M79.643* Pain in unspecified hand
M79.644 Pain in right finger(s)
M79.645 Pain in left finger(s)
M79.646* Pain in unspecified finger(s)
M79.651 Pain in right thigh
M79.652 Pain in left thigh
M79.659* Pain in unspecified thigh
M79.661 Pain in right lower leg
M79.662 Pain in left lower leg
M79.669* Pain in unspecified lower leg
M79.671 Pain in right foot
M79.672 Pain in left foot
M79.673* Pain in unspecified foot
M79.674 Pain in right toe(s)
M79.675 Pain in left toe(s)
M79.676* Pain in unspecified toe(s)
*Codes with a greater degree of specificity should be considered first.

Other Forms Of Heart Disease (ICD-9-CM 427.31)

ICD-10-CM Codes
I48.0 Paroxysmal atrial fibrillation
I48.2 Chronic atrial fibrillation
I48.91* Unspecified atrial fibrillation
*Codes with a greater degree of specificity should be considered first.

Urinary Tract Infection, Cystitis (ICD-9-CM 595.0 to 595.4 range, 595.81, 595.82, 595.89, 595.9, 599.0)

ICD-10-CM Codes
N30.00 Acute cystitis without hematuria
N30.01 Acute cystitis with hematuria
N30.10 Interstitial cystitis (chronic) without hematuria
N30.11 Interstitial cystitis (chronic) with hematuria
N30.20 Other chronic cystitis without hematuria
N30.21 Other chronic cystitis with hematuria
N30.30 Trigonitis without hematuria
N30.31 Trigonitis with hematuria
N30.40 Irradiation cystitis without hematuria
N30.41 Irradiation cystitis with hematuria
N30.80 Other cystitis without hematuria
N30.81 Other cystitis with hematuria
N30.90 Cystitis, unspecified without hematuria
N30.91 Cystitis, unspecified with hematuria
N39.0* Urinary tract infection, site not specified
*Codes with a greater degree of specificity should be considered first.