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ICD-10-CM Code for Idiopathic mast cell activation syndrome D89.42

ICD-10 code D89.42 for Idiopathic mast cell activation syndrome is a medical classification as listed by WHO under the range - Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism .

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Official Long Descriptor

Idiopathic mast cell activation syndrome

D89.4

Excludes1: aggressive systemic mastocytosis (C96.21)
congenital cutaneous mastocytosis (Q82.2)
(non-congenital) cutaneous mastocytosis (D47.01)
(indolent) systemic mastocytosis (D47.02)
malignant mast cell neoplasm (C96.2-)
malignant mastocytoma (C96.29)
mast cell leukemia (C94.3-)
mast cell sarcoma (C96.22)
mastocytoma NOS (D47.09)
other mast cell neoplasms of uncertain behavior (D47.09)
systemic mastocytosis associated with a clonal hematologic non-mast cell lineage disease (SM-AHNMD) (D47.02)

D89

Excludes1: hyperglobulinemia NOS (R77.1)
monoclonal gammopathy (of undetermined significance) (D47.2)

Excludes2: transplant failure and rejection (T86.-)

Additional/Related Information

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Get crucial instructions for accurate ICD-10-CM D89.42 coding with all applicable Excludes 1 and Excludes 2 notes from the section level conveniently shown with each code.
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Autoimmune disease and immunosuppression coding
[QUOTE="amiller3, post: 506260, member: 560719"] Thank you - you definitely answered my question, as it was generalized in nature. [/QUOTE] You're welcome! Just another thought - if the disease of th... [ Read More ]
Autoimmune disease and immunosuppression coding
[QUOTE="thomas7331, post: 506257, member: 5404"] I'd want to see a little more of the record before answering definitively. Can you tell what is the reason for the immunosuppression in this patient? ... [ Read More ]
Autoimmune disease and immunosuppression coding
I'd want to see a little more of the record before answering definitively. Can you tell what is the reason for the immunosuppression in this patient? If that isn't specified in the record, then I th... [ Read More ]
Autoimmune disease and immunosuppression coding
I have a coding scenario I need assistance with. Are you able to code M06.9, Rheumatoid arthritis, unspecified with the code D89.89, Other specified disorders involving the immune mechanism, not elsew... [ Read More ]
M05.89 with D89.9 THEN M06.09 with D89.9
Without seeing the documentation or knowing the provider's diagnosis of the patients' diseases, there's no definitive way of knowing whether or not the code choices are correct. But if D89.9 is coded... [ Read More ]
M05.89 with D89.9 THEN M06.09 with D89.9
I just started coding Rheumatology and I have a dilemma. Some of my providers are putting M05.89 (Other rheumatoid arthritis with rheumatoid factor of multiple site) with D89.9 (Disorder involving th... [ Read More ]
Sequencing. Help! actually just HELP!!! complication gastro liver sequencing transplant
I had a bill kicked back from Aetna for dx codes. I have PSC as my primary and the doc wanted this attached with liver transplant recipient, as well as UC and jaundice. I only have 4 dx available to m... [ Read More ]
Chronic Immunosuppression immunosuppression transplants
I am seeing physicians coding chronic immunosuppression D89. 89 for patient's who have had organ transplants. Is this correct or should immunosuppression just be assumed for transplant patient's? I be... [ Read More ]
Personal History of von Willebrand's
Z86.2 is personal history of diseases of the blood and blood forming organs and certain disorders involving immune mechanism. then states conditions classifiable to D50-D89 VWD dx code is D68.0 Tha... [ Read More ]
Hyperbaric Oxygen Coding
[QUOTE="mclewis, post: 393353, member: 10393"]Hello! I code for a wound care center that does HBO and one of the indications on the NCD 20.29 is preparation for compromised skin graft. I have been u... [ Read More ]
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