The codes in these crosswalks were selected based on the most commonly used ICD-9 codes according to historical MedStar Health coding data and from professional coding associations, and are ordered by frequency of use.
Not all the codes you need are contained in this list. For a comprehensive list of ICD-10 codes, use Diagnosis Assistant or the IMO Anywhere tool.
| Code | Description (ICD-9 codes are in blue) |
|---|---|
| 042 | Human immunodeficiency virus (HIV) disease |
| B20 | Human immunodeficiency virus (HIV) disease |
| 780.60 | Fever, unspecified |
| R50.2 | Drug induced Fever |
| R50.1 | Fever, unspecified |
| 790.7 | Bacteremia |
| R78.81 | Bacteremia |
| 486 | Pneumonia organism unspecified |
|
| If pneumonia is viral, and virus known: |
| J12.0 | Adenoviral pneumonia |
|
J12.1 |
Respiratory syncytial virus pneumonia |
|
J12.81 |
Pneumonia due to SARS-associated coronavirus |
|
J12.89 |
Other viral pneumonia |
|
J12.9 |
Viral pneumonia, unspecified |
|
|
Detailed diagnosis choices are available if the organism has been identified |
|
J13 |
Pneumonia due to Streptococcus pneumonia |
|
J14 |
Pneumonia due to Hemophilus influenzae |
|
J15.0 |
Pneumonia due to Klebsiella pneumoniae |
|
J15.1 |
Pneumonia due to Pseudomonas |
|
J15.6 |
Pneumonia due to other aerobic Gram-negative bacteria |
|
J15.7 |
Pneumonia due to Mycoplasma pneumonia |
|
J15.9 |
Unspecified bacterial pneumonia due to gram positive cocci |
|
J15.0 |
Chlamydial pneumonia |
| 288.60 | Leukocytosis, unspecified |
| D72.89 | Other specified disorders of white blood cells |
| D72.820 | Lymphocytosis (symptomatic) |
|
D72.823 |
Leukemoid reaction |
|
D72.824 |
Basophilia |
|
D72.828 |
Other elevated white blood cell count |
|
D72.829 |
Elevated white blood cell count, unspecified |
| 070.54 | Chronic hepatitis C without hepatic coma |
| B18.2 | Chronic hepatitis C without hepatic coma |
| 599.0 | Urinary tract infection site not specified |
| N39.0 | Urinary tract infection site not specified |
| 518.81 | Acute respiratory failure |
|
| Documentation must differentiate between acute and regular respiratory failure and also whether there is hypoxia or hypercapnia: Specific diagnosis options: |
| J96.90 | Respiratory failure, unspecified, unspecified whether with hypoxia or hypercapnia |
|
J96.01 |
Acute respiratory failure with hypoxia |
|
J96.02 |
Acute respiratory failure with hypercapnia |
|
J96.91 |
Respiratory failure, unspecified with hypoxia |
|
J96.92 |
Respiratory failure, unspecified with hypercapnia |
|
J96.00 |
Acute respiratory failure, unspecified whether with hypoxia or hypercapnia |
| 038.9 | Unspecified septicemia |
|
| Separate Codes for sepsis and organism causing sepsis have been combined into one code under ICD-10. Specific examples include: |
| A40.0 | Sepsis due to streptococcus, group A |
|
A40.1 |
Sepsis due to streptococcus, group B |
|
A40.3 |
Sepsis due to Streptococcus pneumoniae |
|
A40.8 |
Other streptococcal sepsis |
|
A40.9 |
Streptococcal sepsis, unspecified |
| A41.01 |
Sepsis due to Methicillin susceptible Staphylococcus aureus |
|
A41.02 |
Sepsis due to Methicillin resistant Staphylococcus aureus |
|
A41.1 |
Sepsis due to other specified staphylococcus |
|
A41.2 |
Sepsis due to unspecified staphylococcus |
|
A41.3 |
Sepsis due to Hemophilus influenzae |
|
A41.4 |
Sepsis due to anaerobes |
|
A41.51 |
Sepsis due to Escherichia coli [E. coli] |
|
A41.52 |
Sepsis due to Pseudomonas |
|
A41.53 |
Sepsis due to Serratia |
|
A41.59 |
Other Gram-negative sepsis |
|
A41.81 |
Sepsis due to Enterococcus |
| 786.50 | Chest pain, unspecified |
| R07.1 | Chest pain on breathing |
| R07.2 | Precordial pain |
|
R07.81 |
Pleurodynia |
|
R07.82 |
Intercostal pain |
|
R07.89 |
Other chest pain |
| V70.0 | Routine general medical examination at a health care facility |
| Z00.00 | Encounter for general adult medical examination without abnormal findings |
| Z00.01 | Encounter for general adult medical examination with abnormal findings |
| 682.9 | Cellulitis and abscess of unspecified sites |
| L03.90 | Cellulitis, unspecified |
| L03.91 | Acute lymphangitis, unspecified |
|
L02.91 |
Cutaneous abscess, unspecified |
|
L98.3 |
Eosinophilic cellulitis [Wells] |
| 892.0 | Open wound of foot except toe(s) alone without complication |
|
| Document if open wound or laceration of foot with or without foreign body. Note if bite. Specify laterality. ICD-10 options include the following: |
| S91.301A | Unspecified open wound, unspecified foot, initial encounter |
|
S91.302A |
Unspecified open wound, right foot, initial encounter |
|
S91.311A |
Unspecified open wound, left foot, initial encounter |
|
S91.312A |
Laceration without foreign body, right foot, initial encounter |
|
S91.319A |
Laceration without foreign body, left foot, initial encounter |
|
S91.331A |
Laceration without foreign body, unspecified foot, initial encounter |
|
S91.332A |
Puncture wound without foreign body, right foot, initial encounter |
|
S91.339A |
Puncture wound without foreign body, left foot, initial encounter |
|
S91.351A |
Puncture wound without foreign body, unspecified foot, initial encounter |
|
S91.352A |
Open bite, right foot, initial encounter |
|
S91.359A |
Open bite, left foot, initial encounter |
|
|
Open bite, unspecified foot, initial encounter |
| 401.9 | Unspecified essential hypertension |
|
| Specific types of hypertension should be noted. ICD-10 options include: |
| I15.1 | Hypertension secondary to other renal disorders |
|
I15.2 |
Hypertension secondary to endocrine disorders |
|
I15.0 |
Renovascular hypertension |
| O10 |
Pre-existing hypertension complicating pregnancy, childbirth and the puerperium |
| O11 |
Pre-existing hypertension with pre-eclampsia |
|
I10 | Essential (primary) hypertension |
|
I15.9 |
Secondary hypertension, unspecified |
|
I97.3 |
Postprocedural hypertension |
| K76.6 |
Portal hypertension |
| 567.22 | Peritoneal abscess |
| K65.1 | Peritoneal abscess |
| 998.32 | Disruption of external operation (surgical) wound |
| T81.31XA | Disruption of external operation (surgical) wound |
| 250.00 |
Diabetes mellitus without mention of complication, type II or unspecified type, not stated as uncontrolled |
|
| Document type 2 diabetes with or without complications and note if controlled or uncontrolled. |
| E11.9 | Type 2 diabetes mellitus without complications |
|
E13.9 |
Other specified diabetes mellitus without complications |
| 787.91 | Diarrhea |
|
| Allergic and dietetic gastroenteritis can now be reported under one code under ICD-10. See available code choices below: |
| K52.2 | Allergic and dietetic gastroenteritis and colitis |
|
K52.89 |
Other specified noninfective gastroenteritis and colitis |
| R19.7 |
Diarrhea, unspecified |
| 041.11 | Methicillin susceptible staphylococcus aureus in conditions classified elsewhere and of unspecified site |
|
| Document if Staphylococcus infection is the cause of another known condition or disease. |
| B95.61 | Methicillin susceptible Staphylococcus aureus infection as the cause of diseases classified elsewhere |
| A49.01 |
Methicillin susceptible Staphylococcus aureus infection, unspecified site |
| 996.61 | Infection and inflammatory reaction due to cardiac device implant and graft |
|
| Document if infection and inflammatory reation is due to other cardiac valve prosthesis, devices, implants, or grafts. |
| T82.6XXA | Infection and inflammatory reaction due to cardiac valve prosthesis, initial encounter |
|
T82.7XXA |
Infection and inflammatory reaction due to other cardiac and vascular devices, implants and grafts, initial encounter |
| 707.10 | Unspecified ulcer of lower limb |
|
| Document if pressure chronic ulcer is with breakdown of skin, exposed fat layer, or necrosis. Note laterality and specific region of limb. |
| L97.909 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg with unspecified severity |
|
L97.901 |
Non-pressure chronic ulcer of unspecified part of unspecified lower leg limited to breakdown of skin |
|
L97.902 |
Non-pressure chronic ulcer of unspecified part of unspecified lower leg with fat layer exposed |
|
L97.903 |
Non-pressure chronic ulcer of unspecified part of unspecified lower leg with necrosis of muscle |
|
L97.904 |
Non-pressure chronic ulcer of unspecified part of unspecified lower leg with necrosis of bone |
|
L97.911 |
Non-pressure chronic ulcer of unspecified part of right lower leg limited to breakdown of skin |
|
L97.912 |
Non-pressure chronic ulcer of unspecified part of right lower leg with fat layer exposed |
|
L97.913 |
Non-pressure chronic ulcer of unspecified part of right lower leg with necrosis of muscle |
|
L97.914 |
Non-pressure chronic ulcer of unspecified part of right lower leg with necrosis of bone |
|
L97.919 |
Non-pressure chronic ulcer of unspecified part of right lower leg with unspecified severity |
|
L97.921 |
Non-pressure chronic ulcer of unspecified part of left lower leg limited to breakdown of skin |
|
L97.922 |
Non-pressure chronic ulcer of unspecified part of left lower leg with fat layer exposed |
|
L97.923 |
Non-pressure chronic ulcer of unspecified part of left lower leg with necrosis of muscle |
|
L97.994 |
Non-pressure chronic ulcer of unspecified part of left lower leg with necrosis of bone |
|
L97.929 |
Non-pressure chronic ulcer of unspecified part of left lower leg with unspecified severity |
| 998.59 | Other postoperative infection |
|
|
Important to note if postprocedural retroperitoneal abscess or infection following a procedure. |
| K68.11 | Postprocedural retroperitoneal abscess |
| T81.4XXA | Infection following a procedure, initial encounter |
| 730.20 | Unspecified osteomyelitis site unspecified |
|
| No longer need to document site of osteomyelitis. ICD-10 maps to unspecified site for all locations: |
| M86.9 | Osteomyelitis, unspecified |
| 780.97 | Altered mental status |
|
| Documentation should detail if altered mental status or disorientation |
| R41.0 | Disorientation, unspecified |
|
R41.82 |
Altered mental status, unspecified |
| 996.62 | Due to vascular device, implant and graft |
| T82.7XXA | Due to vascular device, implant and graft |
| 585.6 | End stage renal disease |
| N18.6 | End stage renal disease |
| 996.66 | Infection and inflammatory reaction due to internal joint prosthesis |
|
| Document the site of prosthesis causing infection. Note laterality when possible. A sample of available codes is below. |
| T84.51XA | Infection and inflammatory reaction due to internal right hip prosthesis, initial encounter |
|
T84.52XA |
Infection and inflammatory reaction due to internal left hip prosthesis, initial encounter |
|
T84.53XA |
Infection and inflammatory reaction due to internal right knee prosthesis, initial encounter |
|
T84.54XA |
Infection and inflammatory reaction due to internal left knee prosthesis, initial encounter |
| 995.90 | Systemic inflammatory response syndrome unspecified |
|
| Document if with or without acute organ dysfunction. |
| R65.10 | Systemic inflammatory response syndrome (SIRS) of non-infectious origin without acute organ dysfunction |
| 785.51 | Cardiogenic shock |
| R57.0 | Cardiogenic shock |
| 322.9 | Meningitis unspecified |
| G03.0 | Nonpyogenic meningitis |
| G03.8 | Meningitis due to other specified causes |
|
G03.1 |
Chronic meningitis |
|
G03.9 |
Meningitis, unspecified |
| 795.52 | Nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis |
| R76.12 | Nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis |
|
041.12 | Methicillin resistant staphylococcus aureus in conditions classified elsewhere and of unspecified site |
|
| Document if Methicillin resistent Staphylococcus aureus infection is the cause of an additional disease. |
| A49.02 | Methicillin resistant Staphylococcus aureus infection, unspecified site |
|
B95.62 |
Methicillin resistant Staphylococcus aureus infection as the cause of diseases classified elsewhere |
| 272.4 | Other and unspecified hyperlipidemia |
| E78.2 | Mixed hyperlipidemia |
| E78.3 | Hyperchylomicronemia |
|
E78.4 |
Other hyperlipidemia |
|
E78.5 |
Hyperlipidemia, unspecified |
| 789.00 | Abdominal pain, unspecified site |
|
|
ICD-10 will require the site of pain be documented if available and the type of pain (i.e. epigastric, periubilical, etc.) It is important to also note the site or nature of abdominal pain if available. |
| R10.11 | Right upper quadrant pain |
|
R10.12 |
Left upper quadrant pain |
|
R10.31 |
Right lower quadrant pain |
|
R10.32 |
Left lower quadrant pain |
|
R10.33 |
Periumbilical pain |
|
R10.13 |
Epigastric pain |
|
R10.84 |
Generalized abdominal pain |
|
R10.10 |
Upper abdominal pain, unspecified |
|
R10.2 |
Pelvic and perineal pain |
|
R10.30 |
Lower abdominal pain, unspecified |
|
R10.9 |
Unspecified abdominal pain |
|
R10.0 |
Acute abdomen |
| V05.3 | Need for prophylactic vaccination and inoculation against viralhepatitis |
| Z23 | Encounter for immunization |
| 786.09 | Respiratory abnormalities not otherwise classified |
|
| Documentation should specify type of airway abnormaliites. Specific codes now exist for periodic breathing and snoring: |
| R06.3 | Periodic breathing |
|
R06.83 |
Snoring |
|
R06.89 |
Other abnormalities of breathing |
|
R06.00 |
Dyspnea, unspecified |
|
R06.09 |
Other forms of dyspnea |
| 567.9 | Unspecified peritonitis |
|
| Document the nature of peritonitis if known. ICD-10 options include the following: |
| K65.9 | Peritonitis, unspecified |
|
K65.8 |
Other peritonitis |
|
K65.3 |
Choleperitonitis |
|
K68.9 |
Other disorders of retroperitoneum |
| 511.9 | Unspecified pleural effusion |
|
| It is important to document the type of effusion if possible in ICD-10. |
| J90 | Pleural effusion, not elsewhere classified |
|
J94.2 |
Hemothorax |
|
J94.8 |
Other specified pleural conditions |
|
J94.0 |
Chylous effusion |
|
J91.0 |
Malignant pleural effusion |
|
J91.8 |
Pleural effusion in other conditions classified elsewhere |
| 518.53 | Acute and chronic respiratory failure following trauma and surgery |
|
| Document if acute and chronic respiratory failure with or without hypoxia or hypercapnia. Note if postprocedural. |
| J95.822 | Acute and chronic postprocedural respiratory failure |
| J96.20 |
Acute and chronic respiratory failure, unspecified whether with hypoxia or hypercapnia |
| J96.21 |
Acute and chronic respiratory failure with hypoxia |
| J96.22 |
Acute and chronic respiratory failure with hypercapnia |
| 008.45 | Intestinal infection due to clostridium difficile |
| A04.7 | Enterocolitis due to Clostridium difficile |