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) |
|---|---|
| 283.0 | Autoimmune hemolytic anemias |
| D59.0 | Drug-induced autoimmune hemolytic anemia |
| D59.1 | Other autoimmune hemolytic anemias |
|
|
*Use additional code for adverse effect, if applicable, to identify drug (T36-TSO with fifth or sixth character 5) |
| 145.8 | Malignant neoplasm of other specified parts of mouth |
| C06.89 | Malignant neoplasm of overlapping sites of other parts of mouth |
|
| * Use additional code to identify: |
|
|
alcohol abuse and dependence (Fl 0.-) |
|
|
history of tobacco use (Z87.891) |
|
|
tobacco dependence (F17.-) |
|
|
tobacco use (Z72.0) |
|
C06.80 |
Malignant neoplasm of overlapping sites of unspecified
parts of mouth |
| 202.10 | Mycosis fungoides unspecified site extranodal and solid organ sites |
| C84.00 | Mycosis fungoides, unspecified site |
| C84.09 | Mycosis fungoides, extra nodal and solid organ sites |
| 200.70 | Large cell lymphoma, unspecified site, extranodal and solid organ sites |
| C85.39 | Diffuse large 8-celllymphoma, extranodal and solid organ sites |
| C85.20 | Mediastinal (thymic) large 8-cell lymphoma, unspecified site |
|
C85.29 |
Mediastinal (thymic) large 8-celllymphoma, extra nodal
and solid organ sites |
| 161.9 | Malignant neoplasm of larynx, unspecified |
| C32.9 | Malignant neoplasm of larynx, unspecified |
|
| * Use additional code to identify: |
|
|
alcohol abuse and dependence (F10.-) |
|
|
exposure to environmental tobacco smoke (Z77.22) |
|
|
exposure to tobacco smoke in the perinatal period (P96.81) |
|
|
history of tobacco use (Z87.891) |
|
|
occupational exposure to environmental tobacco smoke
(Z57.31) |
|
|
tobacco dependence (F17.-) |
|
|
tobacco use (Z72.0) |
| 205.10 | Chronic myeloid leukemia, without mention of having achieved remission |
| C92.10 | Chronic myeloid leukemia, BCR/ABL- positive, not having achieved remission |
| 186.9 | Malignant neoplasm of other and unspedfied testis |
| C62.10 | Malignant neoplasm of unspecified descended testis |
| C62.90 | Malignant neoplasm of unspecified testis, unspecified whether descended or undescended |
|
|
* Use additional code to identify any functional activity |
|
C62.11 |
Malignant neoplasm of descended right testis |
|
C62.12 |
Malignant neoplasm of descended left testis |
|
C62.91 |
Malignant neoplasm of right testis, unspecified
whether descended or undescended |
|
C62.92 |
Malignant neoplasm of left testis, unspecified whether
descended or undescended |
| 151.9 | Malignant neoplasm of stomach, unspecified site |
| C16.9 | Malignant neoplasm of stomach, unspecified |
|
| * Use additional code to identify: |
|
|
alcohol abuse and dependence (F10.-) |
| 280.9 | Iron deficiency anemia, unspecified |
| D50.9 | Iron deficiency anemia, unspecified |
| 238.75 | Myelodysplastic syndrome, unspecified |
| D46.9 | Myelodysplastic syndrome, unspecified |
|
| * Use additional code for adverse effect, if applicable, to identify drug (T36-T5O with fifth or sixth character 5) |
|
D46.Z |
Other myelodysplastic syndromes |
| 288.00 | Neutropenia, unspecified |
| D70.9 | Neutropenia, unspecified |
|
| * Use additional code for any associated: |
|
|
fever (R50.81) |
|
|
mucositis (J34.81, K12.3-, K92.81, N76.81) |
| 287.31 | Immune thrombocytopenic purpura |
| D69.3 | Immune thrombocytopenic purpura |
| 284.19 | Other pancytopenia |
| D61.818 | Other pancytopenia |
| 204.00 | Acute lymphoid leukemia, without mention of having achieved remission |
| C91.00 | Acute lymphoblastic leukemia not having achieved remission |
| 446.6 | Thrombotic microangiopathy |
| M31.1 | Thrombotic microangiopathy |
| 273.1 | Monoclonal paraproteinemia |
| D47.2 | Monoclonal gammopathy |
| D89.2 | Hypergammaglobulinemia, unspecified |
| 146.9 | Malignant neoplasm of oropharynx, unspecified site |
| C10.9 | Malignant neoplasm of oropharynx, unspecified |
|
| * Use additional code to identify: |
|
|
alcohol abuse and dependence (F10.-) |
|
|
exposure to environmental tobacco smoke (Z77.22) |
|
|
exposure to tobacco smoke in the perinatal period (P96.81) |
|
|
history of tobacco use (Z87.891) |
|
|
occupational exposure to environmental tobacco smoke
(Z57.31) |
|
|
tobacco dependence (F17.-l |
|
|
tobacco use (Z72.0) |
| 202.0 | Nodular lymphoma, unspecified site, extranodal and solid organ sites |
| C82.90 | Follicular lymphoma, unspecified, unspecified site |
| C82.99 | Follicular lymphoma, unspecified, extranodal and solid organ sites |
|
C82.00 |
Follicular lymphoma grade I, unspecified site |
|
C82.09 |
Follicular lymphoma grade I, extranodal and solid
organ sites |
|
C82.10 |
Follicular lymphoma grade II, unspecified site |
|
C82.19 |
Follicular lymphoma grade II, extra nodal and solid
organ sites |
|
C82.20 |
Follicular lymphoma grade Ill, unspecified, unspecified
site |
|
C82.29 |
Follicular lymphoma grade Ill, unspecified, extra nodal
and solid organ sites |
|
C82.30 |
Follicular lymphoma grade lila, unspecified site |
|
C82.39 |
Follicular lymphoma grade lila, extranodal and solid
organ sites |
|
C82.40 |
Follicular lymphoma grade lllb, unspecified site |
|
C82.49 |
Follicular lymphoma grade lllb, extranodal and solid
organ sites |
|
C82.60 |
Cutaneous follicle center lymphoma, unspecified site |
|
C82.69 |
Cutaneous follicle center lymphoma, exrranodal and
solid organ sites |
|
C82.80 |
Other types of follicular lymphoma, unspecified site |
|
C82.89 |
Other types of follicular lymphoma, extra nodal and
solid organ sites |
| 273.3 | Macroglobulinemia |
| C88.0 | Waldenstrom macroglobulinemia |
| 203.01 | Multiple myeloma, in remission |
| C90.01 | Multiple myeloma in remission |
| 155.1 | Malignant neoplasm of intrahepatic bile ducts |
| C22.1 | Intrahepatic bile duct carcinoma |
|
| * Use additional code to identify: |
|
|
alcohol abuse and dependence (F10.-) |
|
|
hepatitis B (B16.-, B18.0-B18.1) |
|
|
hepatitis C (B17.1-, B18.2) |
| 238.4 | Polycythemia vera |
| D45 | Polycythemia vera |
| 205.00 | Acute myeloid leukemia, without mention of having achieved remission |
| C92.00 | Acute myeloblastic leukemia, not having achieved remission |
| C92.40 | Acute promyelocytic leukemia, not having achieved remission |
|
C92.50 |
Acute myelomonocytic leukemia, not having achieved
remission |
|
C92.60 |
Acute myeloid leukemia with 11q23-abnormality not
having achieved remission |
|
C92.AO |
Acute myeloid leukemia with multilineage dysplasia,
not having achieved remission |
| 309.28 | Adjustment disorder with mixed anxiety and depressed mood |
| F43.23 | Adjustment disorder with mixed anxiety and depressed mood |
| 154.1 | Malignant neoplasm of rectum |
| C20 | Malignant neoplasm of rectum |
| 153.9 | Malignant neoplasm of colon, unspecified site |
| C18.9 | Malignant neoplasm of colon, unspecified |
| V26.33 | Genetic counseling |
| Z31.5 | Encounter for genetic counseling |
| 415.19 | Pulmonary embolism and infarction, other |
| I26.99 | Other pulmonary embolism without acute cor pulmonale |
|
I26.09 | Other pulmonary embolism with acute cor pulmonale |
| 172.9 | Melanoma of skin, site unspecified |
| C43.9 | Malignant melanoma of skin, unspecified |
| D03.9 | Melanoma in situ, unspecified |
| 185 | Malignant neoplasm of prostate |
| C61 | Malignant neoplasm of prostate |
| 204.10 | Chronic, without mention of having achieved remission |
| C91.1 0 | Chronic lymphocytic leukemia of B-cell type not having achieved remission |
| 191.9 | Malignant neoplasm of brain, unspecified site |
| C71.9 | Malignant neoplasm of brain, unspecified |
| 457.0 | Postmastectomy lymphedema syndrome |
| I97.2 | Postmastectomy lymphedema syndrome |
| 150.9 | Malignant neoplasm of esophagus, unspecified site |
| C15.9 | Malignant neoplasm of esophagus, unspecified |
|
| * Use additional code to identify: |
|
|
alcohol abuse or dependence (F10.-) |
| 285.9 | Anemia, unspecified |
| D64.9 | Anemia, unspecified |
| 287.5 | Thrombocytopenia, unspecified |
| D69.6 | Thrombocytopenia, unspecified |
| 453.40 | Acute venous embolism and thrombosis of unspecified deep vessels of lower extremity |
| I82.409 | Acute embolism and thrombosis of unspecified deep veins of unspecified lower extremity |
| I82.401 | Acute embolism and thrombosis of unspecified deep veins of right lower extremity |
|
I82.402 |
Acute embolism and thrombosis of unspecified deep
veins of left lower extremity |
|
I82.403 |
Acute embolism and thrombosis of unspecified deep
veins of lower extremity, bilateral |
| 201.90 | Hodgkin's disease, unspecified, unspecified site, extranodal and solid organ sites |
| C81.90 | Hodgkin lymphoma, unspecified, unspecified site |
| C81.99 | Hodgkin lymphoma, unspecified, extranodal and solid organ sites |
| 171.9 | Malignant neoplasm of connective and other soft tissue, site unspecified |
| C49.9 | Malignant neoplasm of connective and soft tissue, unspecified |
| C47.9 | Malignant neoplasm of peripheral nerves and autonomic nervous system, unspecified |
| 457.1 | Other lymphedema |
| I89.0 | Lymphedema, not elsewhere classified |
| 188.9 | Malignant neoplasm of bladder, part unspecified |
| C67.9 | Malignant neoplasm of bladder, unspecified |
| 189.0 | Malignant neoplasm of kidney, except pelvis |
| C64.9 | Malignant neoplasm of unspecified kidney, except renal pelvis |
| C64.1 | Malignant neoplasm of right kidney, except renal pelvis |
|
C64.2 |
Malignant neoplasm of left kidney, except renal pelvis |
| V58.11 | Encounter for antineoplastic chemotherapy |
| Z51.11 | Encounter for antineoplastic chemotherapy |
|
| * Code also condition requiring care |
| 238.71 | Essential thrombocythemia |
| D47.3 | Essential (hemorrhagic) thrombocythemia |
| 174.9 | Malignant neoplasm of breast (female), unspecified |
| C50.919 | Malignant neoplasm of unspecified site of unspecified female breast |
|
| * Use additional code to identify estrogen receptor status (Z17.0, Z17.1) |
|
C50.911 |
Malignant neoplasm of unspecified site of right female
breast |
|
C50.912 |
Malignant neoplasm of unspecified site of left female
breast |
|
C50.921 |
Malignant neoplasm of unspecified site of right male
breast |
|
C50.922 |
Malignant neoplasm of unspecified site of left male
breast |
|
C50.929 |
Malignant neoplasm of unspecified site of unspecified
male breast |
| 162.9 | Malignant neoplasm of bronchus and lung, unspecified |
| C34.90 | Malignant neoplasm of unspecified part of unspecified bronchus or lung |
|
| * Use additional code to identify: |
|
|
exposure to environmental tobacco smoke (Z77.22) |
|
|
exposure to tobacco smoke in the perinatal period (P96.81) |
|
|
history of tobacco use (Z87.891) |
|
|
occupational exposure to environmental tobacco smoke
(Z57.31) |
|
|
tobacco dependence (F17.-) |
|
|
tobacco use (Z72.0) |
|
C34.91 |
Malignant neoplasm of unspecified part of right
bronchus or lung |
|
C34.92 |
Malignant neoplasm of unspecified part of leh
bronchus or lung |
| 202.80 | Other lymphomas, unspecified site, extra nodal and solid organ site |
| C85.80 | Other specified types of non-Hodgkin lymphoma, unspecified site |
| C85.89 | Other specified types of non-Hodgkin lymphoma, extranodal and solid organ sites |
|
C82.50 |
Diffuse follicle center lymphoma, unspecified site |
|
C82.59 |
Diffuse follicle center lymphoma, extra nodal and solid
organ sites |
|
C84.90 |
Mature T/NK-celllymphomas, unspecified, unspecified
site |
|
C84.99 |
Mature TINK-cell lymphomas, unspecified, extra nodal
and solid organ sites |
|
C84.A0 |
Cutaneous T-cell lymphoma, unspecified, unspecified
site |
|
C84.A9 |
Cutaneous T-celllymphoma, unspecified, extra nodal
and solid organ sites |
|
C84.Z0 |
Other mature T/NK-cell lymphomas, unspecified site |
|
C84.Z9 |
Other mature T/NK·cell lymphomas, extra nodal and
solid organ sites |
|
C85.10 |
Unspecified B-celllymphoma, unspecified site |
|
C85.19 |
Unspecified B-celllymphoma, extranodal and solid
organ sites |
|
C85.20 |
Mediastinal (thymic) large B·celllymphoma, unspecified
site |
|
C85.29 |
Mediastinal (thymic) large B-celllymphoma, extranodal
and solid organ sites |
|
C85.90 |
Non-Hodgkin lymphoma, unspecified, unspecified site |
|
C85.99 |
Non-Hodgkin lymphoma, unspecified, extra nodal and
solid organ sites |
|
C86.4 |
Blastic NK-cell lymphoma |
| 203.00 | Multiple myeloma, without mention of having achieved remission |
| C90.00 | Multiple myeloma not having achieved remission |
| 157.9 | Malignant neoplasm of pancreas, part unspecified |
| C25.9 | Malignant neoplasm of pancreas, unspecified |
|
| * Use additional code to identify: |
|
|
alcohol use and dependence (F10.-) |
| 289.81 | Primary hypercoagulable state |
| D68.51 | Activated protein C resistance |
| D68.52 | Prothrombin gene mutation |
|
D68.59 |
Other primary thrombophilia |
|
D68.61 |
Antiphospholipid syndrome |
|
D68.62 |
Lupus anticoagulant syndrome |
| 198.3 | Secondary malignant neoplasm of brain and spinal cord |
| C79.31 | Secondary malignant neoplasm of brain |
| C79.32 | Secondary malignant neoplasm of cerebral meninges |
| 198.5 | Secondary malignant neoplasm of bone and bone marrow |
| C79.51 | Secondary malignant neoplasm of bone |
| C79.52 | Secondary malignant neoplasm of bone marrow |
| 174.4 | Malignant neoplasm upper-outer quadrant of female breast |
|
| Document laterlity and breast. Note the quadrant of breast. |
| C50.411 | Malignant neoplasm of upper-outer quadrant of right female breast |
|
C50.412 |
Malignant neoplasm of upper-outer quadrant of left female breast |
|
C50.419 |
Malignant neoplasm of upper-outer quadrant of unspecified female breast |
| 196.0 | Secondary and unspecified malignant neoplasm of lymph nodes of head face and neck |
| C77.0 | Secondary and unspecified malignant neoplasm of lymph nodes of head face and neck |
| 197.7 | Malignant neoplasm of liver secondary |
| C78.7 | Malignant neoplasm of liver secondary |
| 157.0 | Malignant neoplasm of head of pancreas |
| C25.0 | Malignant neoplasm of head of pancreas |
| 141.0 | Malignant neoplasm of base of tongue |
| C01 | Malignant neoplasm of base of tongue |
| 233.0 | Carcinoma in situ of breast |
|
| Document if lobular, intraductal, or other specified type of carcinomain situ of right, left, or bilateral breasts. ICD-10 options include the following: |
| D05.90 | Unspecified type of carcinoma in situ of unspecified breast |
|
D05.00 |
Lobular carcinoma in situ of unspecified breast |
|
D05.01 |
Lobular carcinoma in situ of right breast |
|
D05.02 |
Lobular carcinoma in situ of left breast |
|
D05.10 |
Intraductal carcinoma in situ of unspecified breast |
|
D05.11 |
Intraductal carcinoma in situ of right breast |
|
D05.12 |
Intraductal carcinoma in situ of left breast |
|
D05.80 |
Other specified type of carcinoma in situ of unspecified breast |
|
D05.81 |
Other specified type of carcinoma in situ of right breast |
|
D05.82 |
Other specified type of carcinoma in situ of left breast |
|
D05.91 |
Unspecified type of carcinoma in situ of right breast |
|
D05.92 |
Unspecified type of carcinoma in situ of left breast |
| 174.8 | Malignant neoplasm of other specified sites of female breast |
|
| Note the specific breast and account for laterality. |
| C50.819 | Malignant neoplasm of overlapping sites of unspecified female breast |
|
C50.811 |
Malignant neoplasm of overlapping sites of right female breast |
|
C50.812 |
Malignant neoplasm of overlapping sites of left female breast |
| 174.2 | Malignant neoplasm of upper-inner quadrant of female breast |
|
| Document the location of malignant neoplasm noting specific breast and quadrant of breast. |
| C50.219 | Malignant neoplasm of upper-inner quadrant of unspecified female breast |
|
C50.211 |
Malignant neoplasm of upper-inner quadrant of right female breast |
|
C50.212 |
Malignant neoplasm of upper-inner quadrant of left female breast |
| 150.5 | Malignant neoplasm of abdominal esophagus AND Malignant neoplasm of lower third of esophagus |
|
| Both diagnoses are incorporated into one code under ICD-10: |
| C15.5 | Malignant neoplasm of lower third of esophagus |
| 162.3 | Malignant neoplasm of upper lobe bronchus or lung |
| C34.10 | Malignant neoplasm of upper lobe, unspecified bronchus or lung |
| C34.11 | Malignant neoplasm of upper lobe, right bronchus or lung |
|
C34.12 |
Malignant neoplasm of upper lobe, left bronchus or lung |
| 142.0 | Malignant neoplasm of parotid gland |
| C07 | Malignant neoplasm of parotid gland |
| 197.0 | Secondary malignant neoplasm of lung |
| C78.00 | Secondary malignant neoplasm of unspecified lung |
| C78.01 | Secondary malignant neoplasm of right lung |
|
C78.02 |
Secondary malignant neoplasm of left lung |
| 161.1 | Malignant neoplasm of supraglottis |
| C32.1 | Malignant neoplasm of supraglottis |
| 146.0 | Malignant neoplasm of tonsil |
|
| Note if malignant neoplasm is of overlapping sites of tonsils if applicable. |
| C09.9 | Malignant neoplasm of tonsil, unspecified |
|
C09.8 |
Malignant neoplasm of overlapping sites of tonsil |
| 174.3 | Malignant neoplasm of lower-inner quadrant of female breast |
|
| Document if right, left, or unspecified lower inner quadrant of female breast. |
| C50.319 | Malignant neoplasm of lower-inner quadrant of unspecified female breast |
|
C50.311 |
Malignant neoplasm of lower-inner quadrant of right female breast |
|
C50.312 |
Malignant neoplasm of lower-inner quadrant of left female breast |
| 161.0 | Malignant neoplasm of glottis |
| C32.0 | Malignant neoplasm of glottis |
| 153.3 | Malignant neoplasm of sigmoid colon |
| C18.7 | Malignant neoplasm of sigmoid colon |
| 155.0 | Malignant neoplasm of liver, primary |
| C22.0 | Liver cell carcinoma |
| C22.2 | Hepatoblastoma |
|
C22.7 |
Other specified carcinomas of liver |
|
C22.8 |
Malignant neoplasm of liver, primary, unspecified as to type |
|
C22.3 |
Angiosarcoma of liver |
|
C22.4 |
Other sarcomas of liver |
| 157.1 | Malignant neoplasm of body of pancreas |
| C25.1 | Malignant neoplasm of body of pancreas |
| 157.2 | Malignant neoplasm of tail of pancreas |
| C25.2 | Malignant neoplasm of tail of pancreas |
| 203.02 | Multiple myeloma, in relapse |
| C90.02 | Multiple myeloma, in relapse |
| 162.5 | Malignant neoplasm of lower lobe bronchus or lung |
|
| Note laterality and whether neoplasm is in lower bronchus or lung: |
| C34.31 | Malignant neoplasm of lower lobe, right bronchus or lung |
|
C34.32 |
Malignant neoplasm of lower lobe, left bronchus or lung |
| 174.1 | Malignant neoplasm of central portion of female breast |
|
| Document if malignant neoplasm of the left, right, or unspecified central portion of the female breast. |
| C50.119 | Malignant neoplasm of central portion of unspecified female breast |
|
C50.111 |
Malignant neoplasm of central portion of right female breast |
|
C50.112 |
Malignant neoplasm of central portion of left female breast |
| 150.3 | Malignant neoplasm of cervical esophagus AND Malignant neoplasm of upper third of esophagus |
|
| Both diagnoses are incorporated into one code under ICD-10: |
| C15.3 | Malignant neoplasm of upper third of esophagus |
| 289.82 | Secondary hypercoagulable state |
| D68.69 | Other thrombophilia |
| 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 |
| 154.2 | Malignant neoplasm of anal canal |
| C21.1 | Malignant neoplasm of anal canal |
| 174.5 | Malignant neoplasm of lower-outer quadrant of female breast |
|
| Document if malignant neoplasm of lower-outer quadrant of left, right, or unspecified female breast. |
| C50.519 | Malignant neoplasm of lower-outer quadrant of unspecified female breast |
|
C50.511 |
Malignant neoplasm of lower-outer quadrant of right female breast |
|
C50.512 |
Malignant neoplasm of lower-outer quadrant of left female breast |